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

"The way in which we think about the causes of human behavior has changed in a way that suggests that we are at an early stage of a scientific revolution."

"I did not need to be 'taught' to be scientific. It was a natural way of thinking."

"The rat's behavior is lawful, and by lawful I mean it can be predicted and controlled."

"The consequences of behavior determine the probability of its recurrence."