"The environment shapes behavior, but behavior also shapes the environment."

"The human mind is a device for avoiding thought."

"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."

"The way to build a better world is not to create better people, but to create better environments."

"What is love except another name for the use of positive reinforcement? Or vice versa."