"We are beginning to see that the problem is not to free men, but to design the kind of culture in which they will be naturally good."

"The problem is not to get students to ask questions, but to get them to ask interesting questions."

"The ideal of a body of knowledge to which all men can contribute and which all men can use has been the great motivating force of science."

"Man is a product of his environment, and the environment is a product of man."

"I am sometimes asked, 'Do you think of yourself as you think of the organisms you study?' The answer is yes."