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Columbia University professor of psychology, Dr. Herbert Terrace, talks with Studs regarding his 1979 book "Nim: A Chimpanzee Who Learned Sign Language," animal cognition and the evolution of language.

Sontag reads from "Illness as Metaphor" and discusses differences between diseases, particularly tuberculosis and cancer, regarding historic understanding and cultural representation.

Psychedelic drugs are the topic covered in Allan Cohen's book, "Understanding Drug Use: An Adult's Guide to Drugs and the Young". Cohen said young people he counseled often asked, "What's my life really about?" If they were having trouble internally, is that why they were seeking something on the outside, like drugs and chemicals to enhance their lives, is what Cohen wondered.

Oliver Sacks, a neurologist and author, speaks with Studs Terkel about his work in neurology and some of the books he has written. This is the first part of two interviews with Sacks.

In his book, "Doctors' Dilemmas: Moral Conflicts in Medical Care," Samuel Gorovitz tries to show his readers the moral dilemmas that doctors face. Gorovitz explained that physicians need to learn what it’s like to be a patient. Gorovitz also believed that before a student enter medical school, he or she should have spent some time in a hospital as a patient.