"The world would be a better place if we gave up the notion of individual responsibility."

"Men build society and society builds men."

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

"I am sometimes accused of having left something out of account in my analysis of human behavior, and I usually admit it. I have left out the mind."

"I've often said that my rats have taught me more than I've taught them."