If you tried to doubt everything you would not get as far as doubting anything. The game of doubting itself presupposes certainty.

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.

Talent is a spring from which fresh water always flows.- But this spring is worthless if no good use is made of it.

That the world is, is the mystical.

The real question of life after death isn't whether or not it exists, but even if it does what problem this really solves.

A man's thinking goes on within his consciousness in a seclusion in comparison with which any physical seclusion is an exhibition to public view.

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