We admire people to the extent that we cannot explain what they do, and the word 'admire' then means 'marvel at.'

Was putting a man on the moon actually easier than improving education in our public schools?

Death does not trouble me. I have no fear of supernatural punishments, of course, nor could I enjoy an eternal life in which there would be nothing left for me to do, the task of living having been accomplished.

A permissive government is a government that leaves control to other sources.

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

The strengthening of behavior which results from reinforcement is appropriately called 'conditioning'. In operant conditioning we 'strengthen' an operant in the sense of making a response more probable or, in actual fact, more frequent.

When we say that a man controls himself, we must specify who is controlling whom.