... in marriage the great thing was love, and that with love one would always be happy, for happiness rests only on oneself.

Patriotism is "a very definite feeling of preference for one's own people or State above all other peoples and States, and a consequent wish to get for that people or State the greatest advantages and power that can be got - things which are obtainable only at the expense of the advantages and power of other peoples or States."

If goodness has causes, it is not goodness; if it has effects, a reward, it is not goodness either. So goodness is outside the chain of cause and effect.

A man's every action is inevitably conditioned by what surrounds him and by his own body.

We call beauty that which supplies us with a particular pleasure.

War is not courtesy but the most horrible thing in life; and we ought to understand that, and not play at war. We ought to accept this terrible necessity sternly and seriously. It all lies in that: get rid of falsehood and let war be war and not a game.

The truth is obtained like gold, not by letting it grow bigger, but by washing off from it everything that isn't gold