Herbert A. Simon

"Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment."

"Everyone designs who devises courses of action aimed at changing existing situations into preferred ones."

"I don't care how big and fast computers are, they're not as big and fast as the world."

"One finds limits by pushing them."

"One of the first rules of science is if somebody delivers a secret weapon to you, you better use it."

"The proper study of mankind is the science of design."

"To deal with these problems - of world population and hunger, of peace, of energy and mineral resources, of environmental pollution, of poverty - we must broaden and deepen our knowledge of nature's laws, and we must broaden and deepen our understanding of the laws of human behavior."

"When computers came along, I felt for the first time that I had the proper tools for the kind of theoretical work I wanted to do. So I moved over to that, and that got me into psychology."