Going out of style isn't a natural process, but a manipulated change which destroys the beauty of last year's dress in order to make it worthless.

It has always been the task of formal education to set up behavior which would prove useful or enjoyable later in a student's life.

The major difference between rats and people is that rats learn from experience.

The alphabet was a great invention, which enabled men to store and to learn with little effort what others had learned the hard way-that is, to learn from books rather than from direct, possibly painful, contact with the real world.

The world's a poor standard. any society which is free of hunger and violence looks bright against that background.

I've had only one idea in my life - a true idee fixe. To put it as bluntly as possible - the idea of having my own way. 'Control!' expresses it. The control of human behavior. In my early experimental days it was a frenzied, selfish desire to dominate. I remember the rage I used to feel when a prediction went awry. I could have shouted at the subjects of my experiments, 'Behave, damn you! Behave as you ought!

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.