To judge is to see clearly, to care for what is just and therefore to be impartial, more exactly, to be disinterested, more exactly still, to be impersonal.
To do easily what is difficult for others is the mark of talent. To do what is impossible for talent is the mark of genius.
Our duty is to be useful, not according to our desires but according to our powers.
If nationality is consent, the state is compulsion.
Self-interest is but the survival of the animal in us. Humanity only begins for man with self-surrender.