"The study of human behavior is not an attempt to explain away human dignity, but to clarify the conditions under which human beings can achieve their greatest potential."

"I deny that I have ever attacked anyone's dignity. I have attacked the concept of dignity as a causal agent."

"We can't solve problems by using the same kind of thinking we used when we created them."

"A sense of humor is a sense of proportion."

"The world will never be saved by people who believe in free will."