Sacrifice, which is the passion of great souls, has never been the law of societies.

Do not despise your situation; in it you must act, suffer, and conquer. From every point on earth we are equally near to heaven and to the infinite.

A thousand things advance; nine hundred and ninety nine retreat; That is progress.

If ignorance and passion are the foes of popular morality, it must be confessed that moral indifference is the malady of the cultivated classes.

Our duty is to be useful, not according to our desires but according to our powers.

Self-interest is an inexhaustible source of convenient illusions. The number of beings who wish to see truly is extraordinarily small.

Every living being seeks instinctively to complete itself.