Discussing the book "Shadows of Forgotten Ancestors: A Search for Who We Are" about the evolution and the future of the human species. Includes an excerpt of the astronomer Harlow Shapley speaking at the beginning. Includes Carl Sagan reading an excerpt from the book at the end.

Yiddish author Isaac Bashevis Singer discusses his collection of short stories, "Short Friday," as well as his writing style and spiritual influences.

Vine Deloria discusses his book "The Metaphysics of Modern Existence", religion, ethics, Native Americans, Native American culture, and Native American history. Includes a previous interview with Vine Deloria at O'Hare Airport.

Discussing "New approaches to man and technology

Interviewing Bertrand Russell and Phyllis Evans while Studs was in England.

Marshall McLuhan discusses a wide range of topics including conformity, changes in entertainment media, cultural change, art and artists, originality in dance, reading and language, human interaction with nature, and technology. Recorded in front of a live audience at Kendall College, McLuhan takes several questions from the audience throughout the program.

Interviewing Bertrand Russell and Phyllis Evans while Studs was in England.

Terkel interviews author and philosopher Alan Watts. They discuss his latest biography book that had come out entitled "In My Own Way."

Discussing the book "Artist as Thinker: From Shakespeare to Joyce" with the author George Anastaplo.

Discussing "The Passion of Ayn Rand" (published by Doubleday) with the author Barbara Branden.

Discussing the book "A Second Look In the Rear-View Mirror: Further Autobiographical Reflections of a Philosopher at Large" (published by Macmillan) with the author Mortimer Adler. Program includes an excerpt of a September 21, 1959 interview with Robert Hutchins.