Discussing "The Difference of Man and the Difference it Makes" and the philosophical ideals of Mortimer J. Adler. Mr. Adler speaks of his idea that the difference between human and animal behavior is a radical difference in kind.

Foreign language expert Howard Vincent talks with Studs Terkel about foreign languages, Herman Melville, “Moby Dick,” and other literary works.

Evolution and the future of the human race are among topics in Carl Sagan's and Ann Druyan's book, "Shadows of Forgotten Ancestors: A Search for Who We Are." Included is an excerpt of the astronomer Harlow Shapley speaking at the beginning. Carl Sagan also reads an excerpt from the book at the end.