# Free Inquiry
# Separation Of Church And State
# The Ideal Of Freedom
# Ethics Based On Critical Intelligence
# Moral Education
# Religious Skepticism
# Reason
# Science And Technology
# Evolution
# Education
- George Abell (professor of astronomy, UCLA)
- John Anton (professor of philosophy, Emory University)
- Khoren Arisian (minister, First Unitarian Society of Minneapolis)
- Isaac Asimov (science fiction author)
- Paul Beattie (minister, All Souls Unitarian Church; president, Fellowship of Religious Humanism)
- H. James Birx (professor of anthropology and sociology, Canisius College)
- Brand Blanshard (professor emeritus of philosophy, Yale)
- Joseph L. Blau (Profelsor Emeritus of Religion, Columbia)
- Francis Crick (Nobel Prize Laureate, Salk Institute)
- Arthur Danto (professor of philosophy, Columbia University)
- Albert Ellis (executive director, Institute for Rational Emotive Therapy)
- Roy Fairfield (former professor of social science, Antioch)
- Herbert Feigl (professor emeritus of philosophy, University of Minnesota)
- Joseph Fletcher (theologian, University of Virginia Medical School)
- Sidney Hook (professor emeritus of philosophy, NYU, fellow at Hoover Institute)
- George Hourani (professor of philosophy, State University of New York at Buffalo)
- Walter Kaufmann (professor of philosophy, Princeton)
- Marvin Kohl (professor of philosophy, medical ethics, State University of New York at Fredonia)
- Richard Kostelanetz (writer, artist, critic)
- Paul Kurtz (Professor of Philosophy, State University of New York at Buffalo)
- Joseph Margolis (professor of philosophy, Temple University)
- Floyd Matson (professor of American Studies, University of Hawaii)
- Ernest Nagel (professor emeritus of philosophy, Columbia)
- Lee Nisbet (associate professor of philosophy, Medaille)
- George Olincy (lawyer)
- Virginia Olincy
- W. V. Quine (professor of philosophy, Harvard University)
- Robert Rimmer (novelist)
- Herbert Schapiro (Freedom from Religion Foundation)
- Herbert Schneider (professor emeritus of philosophy, Claremont College)
- B. F. Skinner (professor emeritus of psychology, Harvard)
- Gordon Stein (editor, The American Rationalist)
- George Tomashevich (professor of anthropology, Buffalo State University College)
- Valentin Turchin (Russian dissident; computer scientist, City College, City University of New York)
- Sherwin Wine (rabbi, Birmingham Temple, founder, Society for Humanistic Judaism)
- Marvin Zimmerman (professor of philosophy, State University of New York at Buffalo)
- Sir A.J. Ayer (professor of philosophy, Oxford University)
- H.J. Blackham (former chairman, Social Morality Council and British Humanist Association)
- Bernard Crick (professor of politics, Birkbeck College, London University)
- Sir Raymond Firth (professor emeritus of anthropology, University of London)
- Jim Herrick (then editor of The Freethinker )
- Zheres A. Medvedev (Russian dissident; Medical Research Council)
- Dora Russell (Mrs. Bertrand Russell ) (author)
- Lord Ritchie-Calder (president, Rationalist Press Association)
- Harry Stopes-Roe (senior lecturer in science studies, University of Birmingham; chairman, British Humanist Association)
- Nicolas Walter (editor, New Humanist)
- Baroness Barbara Wootton (Deputy Speaker, House of Lords)
- B. Shah (president, Indian Secular Society; director, Institute for the Study of Indian Traditions)
- V. M. Tarkunde (Supreme Court Judge, chairman, Indian Radical Humanist Association)
- Shulamit Aloni (lawyer, member of Knesset, head of Citizens Rights Movement)
- Milovan Djilas (author, former vice president of Yugoslavia)
- M. Markovic (professor of philosophy, Serbian Academy of Sciences & Arts and University of Belgrade)
- Svet. Stojanovic (professor of philosophy, University of Belgrade)
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