Do not intervene between a person and the consequences of their own behavior.

I don't believe in God, so I'm not afraid of dying.

Must we wait for selection to solve the problems of overpopulation, exhaustion of resources, pollution of the environment and a nuclear holocaust, or can we take explicit steps to make our future more secure? In the latter case, must we not transcend selection?

Somehow people get the idea I think we should be given gumdrops whenever we do anything of value.

The simulated approval and affection with which parents and teachers are often urged to solve behavior problems are counterfeit. So are flattery, backslap-ping, and many other ways of "winning friends.

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.

The extent to which human aggression exemplifies innate tendencies is not clear.