"Man is a machine in the sense that he is a complex system behaving in lawful ways, but the complexity is extraordinary."

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

"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."

"A scientist may not be sure of the answer, but he's often sure he can find one. And that's a condition which is clearly not enjoyed by philosophy."

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