It is almost everywhere the case that soon after it is begotten the greater part of human wisdom is laid to rest in repositories.

There is no greater impediment to progress in the sciences than the desire to see it take place too quickly.

To err is human also in so far as animals seldom or never err, or at least only the cleverest of them do so.

The Greeks possessed a knowledge of human nature we seem hardly able to attain to without passing through the strengthening hibernation of a new barbarism.

One's first step in wisdom is to question everything - and one's last is to come to terms with everything

Many things about our bodies would not seem to us so filthy and obscene if we did not have the idea of nobility in our heads.