It is obvious that an imagined #‎ world , however different it may be from the real one, must have something - a form - in common with it.

It is one of the chief skills of the philosopher not to occupy himself with questions which do not concern him.

It would strike me as ridiculous to want to doubt the existence of Napoleon; but if someone doubted the existence of the earth 150years ago, perhaps I should be more willing to listen, for now he is doubting our whole system of evidence.

A tautology's truth is certain, a proposition's possible, a contradiction's impossible.

The face is the soul of the body.

We feel that even if all possible scientific questions be answered, the problems of life have still not been touched at all.

The difference between a good and a poor architect is that the poor architect succumbs to every temptation and the good one resists it.