The philosopher forms his principles on an infinity of particular observations. He does not confuse truth with plausibility, he takes for truth what is true, for false what is false, for doubtful what is doubtful, and probable what is probable. The philosophical spirit is thus a spirit of observation and accuracy.

Philosophy is as far separated from impiety as religion is from fanaticism.

In order to get as much fame as one's father one has to much more able than he.

The world is the house of the strong. I shall not know until the end what I have lost or won in this place, in this vast gambling den where I have spent more than sixty years, dice box in hand, shaking the dice.

It is raining bombs on the house of the Lord. I go in fear and trembling lest one of these terrible bombers gets into difficulties.

Time, matter, space - all, it may be, are no more than a point.

It is not the man who is beside himself, but he who is cool and collected,--who is master of his countenance, of his voice, of his actions, of his gestures, of every part of his play,--who can work upon others at his pleasure.