A person who has been punished is not thereby simply less inclined to behave in a given way; at best, he learns how to avoid punishment.

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

I don't know whether I want to improve religion or not. I prefer to get rid of it.

You can get along very well in this world by simply coming up with a quantity of reasonably valid statements.

The feeling of being interested can act as a kind of neurological signal, directing us to fruitful areas of inquiry.

No theory changes what it is a theory about; man remains what he has always been.

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

I am opposed to the military use of animals. I am also opposed to the military use of men.

We shouldn't teach great books; we should teach a love of reading.