No theory is good unless it permits, not rest, but the greatest work. No theory is good except on condition that one use it to go on beyond.
Be faithful to that which exists within yourself.
The most beaten paths are certainly the surest, but do not hope to start much game on them.
It is often so: the harder it is to hear, the more a truth is worth saying.
The world will be saved by one or two people.
Great authors are admirable in this respect: in every generation they make for disagreement. Through them we become aware of our differences.