The motive power of democracy is love

Our laughter is always the laughter of a group.

To exist is to change, to change is to mature, to mature is to go on creating oneself endlessly.

Europe is overpopulated, the world will soon be in the same condition, and if the self-reproduction of man is not rationalized... we shall have war.

It is with our entire past ... that we desire, will and act ... from this survival of the past it follows that consciousness cannot go through the same state twice. The circumstances may still be the same, but they will act no longer on the same person ... that is why our duration is irreversible.

The emotion felt by a man in the presence of nature certainly counts for something in the origin of religions.

I would say act like a man of thought and think like a man of action.