The heart has its reasons that the reason does not know.
Men never do evil so completely and cheerfully as when they do it from religious conviction.
I have discovered that all the misfortune of men comes from one single thing, not knowing how to remain quiet in a room. Man is only a reed, the feeblest reed in nature, but he is a thinking reed. Uncertain fortune is thoroughly mastered by the equity of the calculation. It is remarkable that a science which began with consideration of games of chance should have become the most important object of human knowledge. The main thing is the play itself.