We spend our time envying people whom we wouldn't wish to be.
Hatred, for the man who is not engaged in it, is a little like the odor of garlic for one who hasn't eaten any.
A man is not old as long as he is seeking something.
There are things that don't deserve to be said briefly.
Already at the origin of the species man was equal to what he was destined to become.
It is not easy to imagine how little interested a scientist usually is in the work of any other, with the possible exception of the teacher who backs him or the student who honors him.