ارتودوکس مدرن یک جنبش در درون یهودیت ارتدکس است که برای سازگارسازی ارزشهای یهودی با حفظ قوانین دین یهودیت، با جهان مدرن و سکولار تلاش میکند. این جنبش تلاش میکند ارزشهای یهودی را با جهان سکولار و مدرن ترکیب کند. در ایالات متحده و جهان غرب آنان را بیشتر با نام "ارتودوکس میانهرو" میشناسند.
Modern Orthodoxy draws on several teachings and philosophies, and thus assumes various forms. In the United States, and generally in the Western world, Centrist Orthodoxy underpinned by the philosophy of Torah Umadda ("Torah and Scientific Knowledge") is prevalent. In Israel, Modern Orthodoxy is dominated by Religious Zionism; however, although not identical, these movements share many of the same values and many of the same adherents.
Modern Orthodoxy comprises a fairly broad spectrum of movements each drawing on several distinct, though related, philosophies, which in some combination provide the basis for all variations of the movement today.
In general, Modern Orthodoxy's "overall approach ... is the belief that one can and should be a full member of modern society, accepting the risks to remaining observant, because the benefits outweigh those risks". Jews should engage constructively with the world that they are in to foster goodness and justice within both themselves and the larger community, such as by avoiding sin in their personal lives while also caring for the unfortunate.
Thus, Modern Orthodoxy holds that Jewish law is normative and binding, while simultaneously attaching a positive value to interaction with the modern world. In this view, as expressed by Rabbi Saul Berman, Orthodox Judaism can "be enriched" by its intersection with modernity; further, "modern society creates opportunities to be productive citizens engaged in the Divine work of transforming the world to benefit humanity". At the same time, in order to preserve the integrity of halakha, any area of "powerful inconsistency and conflict" between Torah and modern culture must be filtered out.
Modern Orthodoxy also assigns a central role to the "People of Israel". Here two characteristics are manifest: in general, Modern Orthodoxy places a high national, as well as religious, significance on the State of Israel, and institutions and individuals are, typically, Zionist in orientation; relatedly, involvement with non-orthodox Jews will extend beyond "outreach" to include institutional relations and cooperation; see further under Torah Umadda.
To the ideological right, the line between Haredi and Modern Orthodox has blurred in recent years; some have referred to this trend as "haredization". In addition to increasing stringency in adherence to Halakha, many Modern Orthodox Jews express a growing sense of alienation from the larger, secular culture. ("Western civilisation has moved from what was once called the Judeo-Christian ethic to a consumer-driven, choice-fixated culture.... Such a world is not chol, but chiloni, not secular, but secularist. It is impermeable to the values of kedushah." ) Here, "the balance has tipped heavily in favor of Torah over madda (secular studies) ... [and many] have redefined 'madda' as support for making one's livelihood in the secular world, not culturally or intellectually engaging with it." Although defining themselves as "centrist", institutions here include the Orthodox Union (Union of Orthodox Jewish Congregations of America), the Rabbinical Council of America, and the Rabbi Isaac Elchanan Theological Seminary.
It is also noted that many Modern Orthodox are "behaviorally modern" as opposed to "ideologically modern", and, in truth, fall outside of "Modern" Orthodoxy, at least in the philosophical sense; see below. This phenomenon is sometimes termed "Social Orthodoxy".
The distinction is as follows: The ideologically modern are "meticulously observant of Halakha", and their interaction with the secular comprises a tangible expression of their ideology, wherever it may lie on the spectrum described. The "behaviorally modern", on the other hand, define themselves as "Modern Orthodox" only in the sense that they are neither Haredi ("Ultra-Orthodox") nor Conservative: these, in other words, are "not deeply concerned with philosophical ideas", and, often, are not as careful in their observance.
This "Orthodoxy of convenience" has maintained a certain stability over time: as long as these don't seek to legitimize their behaviour in halakhic terms, the leadership of the (Modern) Orthodox world have no particular difficulty with them.
Various highly differing views (or non views) - ranging from traditionalist to revisionist - are offered under the banner of "Modern Orthodoxy". In fact, even among its leadership, there is limited agreement "on the philosophical parameters of modern Orthodoxy". The boundaries here, with respect to Haredi and Conservative Judaism, have therefore become increasingly indistinct. Some elements of Haredi Judaism appear to be more receptive to messages that have traditionally been part of the Modern-Orthodox agenda. Similarly, at Modern Orthodoxy's left, many appear to align with more traditional elements of Conservative Judaism. In discussing "Modern Orthodoxy", it is thus also important to clarify its position with reference to other movements in Judaism: see Comparison with other movements below. Further, given this wide range of views, some see the possibility that, in fact, "[t]here is no longer a cohesive, singular Modern Orthodoxy"; see further below.
Hirsch's Torah im Derech Eretz (תורה עם דרך ארץ - "Torah with the 'Way of the World'/Society") is a philosophy of Orthodox Judaism that formalizes a relationship between halakhically observant Judaism and the modern world. Hirsch held that Judaism requires the application of Torah philosophy to all human endeavor and knowledge compatible with it. Thus, secular education becomes a positive religious duty. "Judaism is not a mere adjunct to life: It comprises all of life ... in the synagogue and the kitchen, in the field and the warehouse, in the office and the pulpit ... with the pen and the chisel." Hirsch's vision, although not unqualified, extended to the sciences as well as to (German) literature, philosophy and culture. Torah im Derech Eretz remains influential to this day in all branches of Orthodox Judaism.
Neo Orthodoxy, the movement descended from Hirsch's Frankfurt community, regards itself as positioned, ideologically, outside of contemporary Modern Orthodoxy; see further below.
Rabbi Azriel Hildesheimer, along with Rabbi Hirsch, was insistent that Orthodox Jews living in the west should not segregate themselves behind ghetto walls. On the contrary, modern Jewish education must teach Jews how best to confront and deal with modernity in all of its aspects. His approach, "Cultured Orthodoxy", was defined as representing "unconditional agreement with the culture of the present day; harmony between Judaism and science; but also unconditional steadfastness in the faith and traditions of Judaism".
He was, however, "the pragmatist rather than the philosopher", and it is his actions, rather than his philosophy, which have become institutionalized in Modern Orthodoxy, and through which his influence is still felt.
He established Jewish education for males and females, which included both religious and secular studies.
He was non-sectarian, and worked with communal leaders, even non-Orthodox ones, on issues that affected the community.
He maintained traditional attachments to the Land of Israel, and worked with the non-Orthodox on its behalf.
Torah Umadda (תורה ומדע - "Torah and secular knowledge") is a philosophy concerning the secular world and Judaism, and in particular secular knowledge and Jewish knowledge. It envisions a personal - as opposed tophilosophic - "synthesis" between Torah scholarship and Western, secular scholarship, entailing, also, positive involvement with the broader community. Here, the "individual has absorbed the attitudes characteristic of science, democracy, and Jewish life, and responds appropriately in diverse relations and contexts".  The resultant mode of Orthodox Judaism is referred to as "Centrist Orthodoxy".
This philosophy, as formulated today, is to a large extent a product of the teachings and philosophy of Rabbi Joseph B. Soloveitchik (1903-1993), Rosh Yeshiva at Yeshiva University. In Rav Soloveitchik's thought, Judaism, which believes that the world is "very good", enjoins man to engage in tikkun olam. "Halakhic Man" must therefore attempt to bring the sanctity and purity of the transcendent realm into the material world. Centrist Orthodoxy is the dominant mode of Modern Orthodoxy in the United States, while Torah Umadda remains closely associated with Yeshiva University.
Torah Umadda is related to Hirsch's Torah im Derech Eretz, but see below for a comparison between the two.
Modern Orthodoxy draws on the teachings of Rabbi Abraham Isaac Kook (1864-1935), as well as the writings and interpretations of his son Rabbi Zvi Yehuda Kook (1891-1982), - both as regards their views on Jewish peoplehood and as they regard the (related) interaction with the secular world.
"Rav Kook" saw Zionism as a part of a divine scheme finally to result in the resettlement of the Jewish people in its homeland, bringing salvation ("Geula") to the Jewish people, and the entire world.
In Rav Kook's thought Kodesh and Chol (sacred and profane) play an important role: Kodesh is the inner taam (reason / meaning) of reality, while Chol is that which is detached from Kodesh and is without any meaning; Judaism, then, is the vehicle "whereby we sanctify our lives, and attach all the practical, secular elements of life to spiritual goals which reflect the absolute meaning of existence - G-d Himself".
In Israel, the Religious Zionism of the Dati Leumi (דתי לאומי, "National Religious") dominates Modern Orthodoxy. Here too, the ideological basis is largely drawn from the teachings of Rav Kook, and there is therefore much overlap; philosophical differences, as well as other "non-modern" forms of Religious Zionism, are discussed below.
As above, Modern Orthodoxy comprises various approaches, ranging from traditionalist to revisionist, and the movement apparently overlaps with Conservative Judaism and with Haredi Judaism at its respective boundaries. At its centre too, the movement appears to share practices and values with Neo Orthodoxy and with Religious Zionism. Therefore, in clarifying what Modern Orthodoxy in fact entails, its positioning must be discussed with reference to these movements.
Although there is some question as how precisely to define the distinction between Modern Orthodoxy and Haredi Judaism, there is basic agreement that they may be distinguished on the basis of three major characteristics:
Modern Orthodoxy adopts a relatively inclusive stance toward society in general, and the larger Jewish community in particular.
Modern Orthodoxy is, in comparison, accommodating, "if not welcoming", to modernity, general scholarship, and science.
Modern Orthodoxy is almost uniformly receptive toward Israel and Zionism, viewing the State of Israel (in addition to the Land of Israel) as having inherent religious significance.
A fourth difference suggested, relates to the acceptability of moderation within Jewish law. Both Modern Orthodoxy and Ultra Orthodoxy regard Halakha as divine in origin, and as such, no position is assumed without justification in the Shulchan Aruch and in the Acharonim. The movements differ, however, in their approach to strictures (chumras) and leniencies (kulas).
Modern Orthodoxy holds that strictures are not normative, rather, these are a matter of personal choice; "severity and leniency are relevant only in circumstances of factual doubt, not in situations of debate or varied practice. In the latter situations, the conclusion should be based solely on the legal analysis." (Note though, that in recent years, many Modern Orthodox Jews are described as "increasingly stringent in their adherence to Jewish law".) See Torah Umadda: Moderation.
In the Haredi view, on the other hand, "the most severe position ... is the most likely basis for unity and commonality of practice within the Orthodox community, and is therefore to be preferred". Further, "such severity ... results in the greatest certainty that God's will is being performed".Haredi Judaism thus tends to adopt chumras as a norm.
As to the contention that Modern Orthodoxy's standards of observance of halakha are "relaxed", as opposed to moderate, see below under Criticism.
Modern Orthodoxy's efforts to encourage religious observance among non-Orthodox Jews has been likened to similar efforts by the Chabad movement. The similarity between the two groups in their relationships towards the non-Orthodox, and its adoption by some Haredi groups, has blurred the lines between the modern and Haredi segments of Orthodoxy.
Neo-Orthodoxy/Torah Im Derech Eretz
Both Modern Orthodoxy and Neo Orthodoxy, the movement directly descended from Hirsch's Frankfurt community, have combined Torah and secular knowledge with participation in contemporary western life, and thus some maintain that there is a degree of practical and philosophical overlap between the two. The movements are nevertheless distinct, and in general, Neo-Orthodoxy has taken a more qualified approach than Modern orthodoxy, emphasizing that followers must exercise caution in engagements with the secular world.
Differences between the movements may be more than a question of degree: some Hirsch scholars argue that Hirschian philosophy is at odds with that of Modern Orthodoxy, while some Modern Orthodox scholars maintain that Modern Orthodoxy accords with Hirsch's worldview. These philosophical distinctions (though subtle), manifest in markedly divergent religious attitudes and perspectives. For example, Shimon Schwab, second rabbi of the Torah Im Derech Eretz community in the United States, has been described as being "spiritually very distant" from Yeshiva University and Modern Orthodoxy.
From the viewpoint of Neo-Orthodoxy, that movement differs from Modern Orthodoxy (and particularly Centrist Orthodoxy) on three main counts.
The role of secular life and culture: In the Hirschian view, interaction with the secular and the requisite acquisition of culture and knowledge is encouraged, only insofar as it facilitates the application of Torah to worldly matters. For Modern Orthodoxy, on the other hand, secular culture and knowledge are seen as a complement to Torah, and, to some extent, encouraged for their own sake. Some would suggest that in Modern Orthodoxy, Judaism is enriched by interaction with modernity, whereas in Neo-Orthodoxy human experience (and modernity) are enriched by the application of Torah outlook and practice.
Priority of Torah versus Secular knowledge: In the Hirschian view, Torah is the "sole barometer of truth" by which to judge secular disciplines, as "there is only one truth, and only one body of knowledge that can serve as the standard.... Compared to it, all the other sciences are valid only provisionally." (Hirsch, commentary to Leviticus18:4–5; see also Rashiad loc.). By contrast, in the view of Modern Orthodoxy, although Torah is the "preeminent center", secular knowledge is considered to offer "a different perspective that may not agree at all with [Torah] ... [but] both together present the possibility of a larger truth". (Torah Umadda, p. 236).
Broadly defined, Religious Zionism is a movement that embraces the idea of Jewish national sovereignty, often in connection with the belief in the ability of the Jewish people to bring about a redemptive state through natural means, and often attributing religious significance to the modern State of Israel. The spiritual thinkers who started this stream of thought include Rabbi Zvi Hirsch Kalischer (1795-1874) and Rabbi Yitzchak Yaacov Reines (1839-1915). (This attitude is rejected by most Haredim - but not all, particularly the Hardal movement.) Thus, in this sense, Religious Zionism in fact encompasses a wide spectrum of religious views including Modern Orthodoxy.
Note, however, that Modern Orthodoxy, in fact, overlaps to a large extent with "Religious Zionism" in its narrower form ("Throughout the world, a 'religious Zionist day school' is a synonym for a 'modern Orthodox day school'"). At the least, the two are not in any direct conflict, and generally coexist, sharing both values and adherents. Further, in practice, except at their extremes, the differences between Religious Zionism and Modern Orthodoxy in Israel are not pronounced, and they are often identical, especially in recent years and for the younger generation.
Nevertheless, the two movements are philosophically distinct on two broad counts.
Firstly, (conservative) Religious Zionists differ with Modern Orthodoxy in its approach to secular knowledge. Here, engagement with the secular is permissible, and encouraged, but only insofar as this benefits the State of Israel; secular knowledge (or, at the least, an extensive secular education) is viewed as valuable for practical ends, though not in and of itself. See further under Torah Umadda.
Secondly, under Religious Zionism, a "nationalistic coloration" is given to traditional religious concepts, whereas, by contrast, Modern Orthodoxy includes "a greater balance which includes openness to the non-Jewish world"; thus, under Religious Zionism, the Jewish nation is conceived of as an "organic unity", whereas Modern Orthodoxy emphasises the individual.
In some areas, Modern Orthodoxy's left wing appears to align with more traditional elements of Conservative Judaism, and in fact some on the left of Modern Orthodoxy have allied with the formerly Conservative Union for Traditional Judaism. Nonetheless, the two movements are generally described as distinct. Rabbi Avi Weiss - from the left of Modern Orthodoxy - stresses that Orthodox and Conservative Judaism are "so very different in ... three fundamental areas: Torah mi-Sinai, rabbinic interpretation, and rabbinic legislation". Weiss argues as follows:
Torah mi-Sinai ("Torah From Sinai"): Modern Orthodoxy, in line with the rest of Orthodoxy, holds that Jewish law is Divine in origin, and as such, no underlying principle may be compromised in accounting for changing political, social or economic conditions, whereas Conservative Judaism holds that Poskim should make use of literary and historical analysis in deciding Jewish law, and may reverse decisions of the Acharonim that are held to be inapplicable today.
Rabbinic interpretation: (Modern) Orthodoxy contends that legal authority is cumulative, and that a contemporary posek (decisor) can only issue judgments based on a full history of Jewish legal precedent, whereas the implicit argument of the Conservative movement is that precedent provides illustrations of possible positions rather than binding law. Conservatism, therefore, remains free to select whichever position within the prior history appeals to it.
Rabbinic legislation: Since the (Modern) Orthodox community is ritually observant, Rabbinic law legislated by (today's) Orthodox rabbis can meaningfully become binding if accepted by the community (see minhag). Conservative Judaism, on the other hand, has a largely non-observant laity. Thus, although Conservatism similarly holds that "no law has authority unless it becomes part of the concern and practice of the community"  communal acceptance of a "permissive custom" is not "meaningful", and, as a result, related rabbinic legislation cannot assume the status of law.
In general, Modern Orthodoxy does not, therefore, view the process by which the Conservative movement decides halakha as legitimate - or with the non-normative weighting assigned to particular halakha by the Conservative movement. In particular, Modern Orthodoxy disagrees with many of Conservative Judaism's halakhic rulings, particularly as regards issues of egalitarianism. See further on the Orthodox view and the Conservative view.
There are at least two distinct types of Modern Orthodox... One is philosophically or ideologically modern, while the other is more appropriately characterized as behaviorally modern.... [The] philosophically Modern Orthodox would be those who are meticulously observant of Halakhah but are, nevertheless, philosophically modern.... The behaviorally Modern Orthodox, on the other hand, are not deeply concerned with philosophical ideas ... by and large, they define themselves as Modern Orthodox [either] in the sense that they are not meticulously observant [or] in reference to ... right-wing Orthodoxy.
[This] group is appropriately described as "modern" in the sense that those who see themselves as part of it are committed to the tradition, in general, but feel free to pick and choose in their observance of rituals. In contrast to the more traditional Orthodox, they do not observe all of the rituals as deemed obligatory by the traditional community. Their sense of "freedom of choice", although never articulated theoretically, is as evident as it is among many other contemporary Americans who view themselves as religiously traditional, but, nevertheless, are selective in their religiosity.
Additionally, whereas the Modern Orthodox position is (generally) presented as "unquestioned allegiance to the primacy of Torah, and that the apprehension of all other intellectual disciplines must be rooted and viewed through the prism of Torah",Haredi groups have sometimes compared Modern Orthodoxy with early Reform Judaism in Germany: Modern Orthodox rabbis have been criticised for attempting to modify Jewish law, in adapting Judaism to the needs of the modern world.
Note that claims of this nature have been commonplace within Orthodox Judaism since the first "reforms" of Samson Raphael Hirsch and Azriel Hildesheimer. Thus, in Europe of the early 19th century, all of Judaism that differed from the strictest forms present at the time was called "Reform". Then, as now, Modern Orthodoxy took pains to distance its "reforms", which were consistent with the Shulkhan Arukh and poskim, from those of the Reform movement (and the Conservative movement), which were not.
It is foolish to believe that it is the wording of a prayer, the notes of a synagogue tune, or the order of a special service, which form the abyss between [Reform and Orthodoxy].... It is not the so-called Divine Service which separates us, [rather it] is the theory - the principle [of faithfulness to Jewish law] ... if the Torah is to you the Law of God how dare you place another law above it and go along with God and His Law only as long as you thereby "progress" in other respects at the same time? (Religion Allied to Progress, Samson Raphael Hirsch)
Sociological and philosophical dilemmas
Some observe  that the ability of Modern Orthodoxy to attract a large following and maintain its strength as a movement is inhibited by the fact that it embraces modernity - its raison d'être - and that it is highly rational and intellectual.
Modern Orthodoxy is, almost by definition, inhibited from becoming a strong movement, because this would entail organization and authority to a degree "which goes against the very grain of modernity". A related difficulty is that Modern Orthodox rabbis who do adopt stringencies may, in the process, lose the support of precisely the "Modern" group they sought to lead. The logic: since one of the characteristics of religious orthodoxy is the submission to the authority of its tradition, the individual is expected to conform to all of its dictates, whereas modernity, by contrast, emphasizes a measure of personal autonomy as well as rationalist truth. The very term "Modern Orthodoxy" is thus, in some sense, an oxymoron.
Modern Orthodoxy's "highly intellectual and rational stance" presents its own difficulties. Firstly, the ideology entails built-in tensions and frequently requires conscious living with inconsistency  (even in the term itself: modernity vs. orthodoxy). Secondly, there are also those who question whether "the literature ... with its intellectually elitist bias fails to directly address the majority of its practitioners". The suggestion here is that Modern Orthodoxy may not provide a directly applicable theology for the contemporary Modern Orthodox family; see further discussion under Torah Umadda.
As observed above, the (precise) "philosophical parameters of modern Orthodoxy" are not readily defined. It is posited then that "modern orthodoxy", as such, may be disappearing, "being sucked into pluralistic Judaism on the left and yeshivish on the right". "Modern orthodoxy", then, as opposed to constituting an ideological spectrum centred on a common core of values, is, in fact, (tending towards) several entirely separate movements. In fact, "[m]any are making the argument that the time has come to state the inevitable or to admit that which already has occurred: There is no longer a cohesive, singular Modern Orthodoxy. Separate rabbinical schools and separate rabbinic organizations, the argument goes, reflect the reality of a community divided." 
Many Orthodox Jews find the intellectual engagement with the modern world as a virtue. Examples of Orthodox rabbis who promote or have promoted this worldview include:
Rabbi Yehuda Amital - A Hungarian survivor of the Holocaust, Rabbi Amital emigrated to Israel in 1944, and resumed his yeshiva studies in Jerusalem. During the War of Independence, he served in the Hagana armored corps, taking part in the famous battle of Latrun. Subsequently, he took an active role in the development of Yeshivat Hadarom, where he was involved in the formulation of the idea of Yeshivat Hesder. Following the Six Day War, Rabbi Amital founded and assumed leadership of Yeshivat Har Etzion. He was a dominant public figure in Israel who was widely respected on matters of religious and national concern.
Raymond Apple - former senior rabbi of the Great Synagogue, Sydney, Australia, and the pre-eminent Jewish spokesperson on Judaism in Australia.
Dr. Barry Freundel - former rabbi of Kesher Israel Congregation in Washington, D.C., his specialties were Jewish medical ethics, eruvim, and conversion; he was fired in 2014 after being arrested and subsequently pleaded guilty to 52 counts of voyeurism. Because of his crimes he is no longer considered an authority within the community
Rabbi Dr. Irving Greenberg (Yitz) is a theologian, lecturer, and author of contemporary Jewish thought. A student of Rabbi Joseph B. Soloveitchik, Greenberg espouses the philosophy of Tikkun Olam and has written extensively on the theological impact of the Holocaust and the creation of the state of Israel.
Rabbi Norman Lamm - Rosh Yeshiva, Yeshiva University; Orthodox Forum; author of Torah U-Maddah. One of the leading voices for the validity and importance of Modern Orthodoxy.
Rabbi Dr. Rabbi Aharon Lichtenstein - Lichtenstein grew up in the United States, earning Semicha at Yeshiva University, and a Ph.D. in English Literature at Harvard. He is committed to intensive and original Torah study, and articulates a bold Jewish worldview that embraces modernity, reflecting the tradition of his teacher and father-in-law, Rabbi Joseph B. Soloveitchik. In 1971, Lichtenstein answered Rabbi Amital's request to join him at the helm of Yeshivat Har Etzion. He is a source of inspiration for a wide circle of Jewry, for both his educational attainments and his intellectual leadership. Author of Leaves of Faith: The World of Jewish Learning, and By His Light: Character and Values in the Service of God.
Rabbi Haskel Lookstein - Rabbi of Congregation Kehilath Jeshurun in Manhattan and principal of the Ramaz School. Voted by Newsweek magazine as the most influential orthodox rabbi in the United States in 2008. Rabbi Lookstein is best known for his strong political activism, which began with numerous visits to the former Soviet Union, numerous rallies on behalf of Natan Sharansky and continues today with activism on behalf of the Jews of Israel and worldwide.
Rabbi Shlomo Riskin - Formerly rabbi of the Lincoln Square Synagogue in Manhattan, he emigrated to Israel to become the Chief Rabbi of Efrat.
Rabbi Joseph B. Soloveitchik - Known as "The Rav", he was effectively the spiritual and intellectual guide of Modern Orthodoxy in America for the mid-20th century. He is the author of The Lonely Man of Faith and Halakhic Man, an outspoken Zionist, an opponent of extending rabbinic authority into areas of secular expertise, and a proponent of some interdenominational cooperation, such as the Rabbinical Council of America's participation in the now-defunct Synagogue Council of America. He was known as a stern leader who described in his writings the spiritual loneliness and internal isolation of the modern religious "man of faith".
HaRav Gedalia Dov Schwartz - an eminent Modern Orthodox rabbi, scholar, and posek (halakhic authority) in Chicago, Illinois. Since 1991, he has been the av beis din (head of the rabbinical court) of both the Beth Din of America and the Chicago Rabbinical Council.
Rav Dr. Moshe David Tendler - Rav Tendler is the Rabbi Isaac and Bella Tendler Professor of Jewish Medical Ethics, and is a Professor of Biology, as well as being a Rosh Yeshiva in Yeshivat Rav Yitzchak Elchanan (MYP/RIETS). Holding a Ph.D. in Microbiology, Rav Tendler is among the most prominent students of both Rav Moshe Feinstein, zt'l (his father-in-law) and Rav Yosef Dov Soloveitchik. Rabbi Tendler is an expert on medical ethics as it pertains to Jewish law. He is the author of Practical Medical Halakhah, a textbook of Jewish responsa to medical issues, and "Pardes Rimonim", a book about the halakhot of Taharat Mishpacha. Rabbi Tendler is currently Rabbi of the Community Synagogue in Monsey, New York, and is the chairman of the Bioethical Commission, RCA, and of the Medical Ethics Task Force, UJA-Federation of Greater New York.
Rabbi Walter Wurzburger - former pulpit Rabbi, editor of Tradition magazine, and head of the RCA
Modern Orthodox advocacy groups
There are a few organizations dedicated to furthering Modern Orthodoxy as a religious trend:
The largest and oldest are the Orthodox Union (Union of Orthodox Jewish Congregations of America), which sponsors youth groups, kashrut supervision, and many other activities, and its rabbinic counterpart, the Rabbinical Council of America (RCA). Both have Israel and diaspora (outside the land of Israel) programs.
Meimad is a political/intellectual alternative to Israel's highly nationalistic religious parties or those hostile to modern secularist values
The Jewish Orthodox Feminist Alliance (JOFA): a forum for enhancing the roles of Orthodox Jewish women within the Orthodox community, and reducing Orthodox religious disabilities against women.
Ne’emanei Torah Va’Avodah is a non-profit organization operating in Israel whose proposed goal is "To forge a more open and tolerant discourse in Religious Zionism, one that integrates a halachic lifestyle with active engagement in Israeli society, in order to strengthen tolerance, equality, and social responsibility".
^This includes Modern Orthodox's unequivocal stance prohibiting its members from engaging in gay and Lesbian relationships. There is, however, a difference of opinion as to what stance to take with individuals who violate halakha in this regard. See "Statement of principles of the orthodox rabbis". Retrieved 15 September 2012.
Etengoff, C. (2011). "An Exploration of religious gender differences amongst Jewish-American emerging adults of different socio-religious subgroups". Archive for the Psychology of Religion, 33, 371-391.
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