No one asks how to motivate a baby. A baby naturally explores everything it can get at, unless restraining forces have already been at work. And this tendency doesn't die out, it's wiped out.

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

Something doing every minute' may be a gesture of despair-or the height of a battle against boredom.

No theory changes what it is a theory about. Nothing is changed because we look at it, talk about it, or analyze it in a new way. Keats drank confusion to Newton for analyzing the rainbow, but the rainbow remained as beautiful as ever and became for many even more beautiful. Man has not changed because we look at him, talk about him, and analyze him scientifically. ... What does change is our chance of doing something about the subject of a theory. Newton's analysis of the light in a rainbow was a step in the direction of the laser.

Except when physically restrained, a person is least free or dignified when he is under threat of punishment, and unfortunately most people often are.

Behavior is determined by its consequences.

Men build society and society builds men.