It is a surprising fact that those who object most violently to the manipulation of behaviour nevertheless make the most vigorous effort to manipulate minds.

In the traditional view, a person is free. He is autonomous in the sense that his behavior is uncaused. He can therefore be held responsible for what he does and justly punished if he offends. That view, together with its associated practices, must be re-examined when a scientific analysis reveals unsuspected controlling relations between behavior and environment.

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

A first principle not formally recognized by scientific methodologists: when you run into something interesting, drop everything else and study it.

A culture must be reasonably stable, but it must also change, and it will presumably be strongest if it can avoid excessive respect for tradition and fear of novelty on the one hand and excessively rapid change on the other.

The one fact that I would cry form every housetop is this: the Good Life is waiting for us - here and now.

Old age is rather like another country. You will enjoy it more if you have prepared yourself before you go.