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.
To read a writer is for me not merely to get an idea of what he says, but to go off with him and travel in his company.
One does not discover new lands without consenting to lose sight of the shore for a very long time.
Great authors are admirable in this respect: in every generation they make for disagreement. Through them we become aware of our differences.
It is easier to lead men to combat, stirring up their passion, than to restrain them and direct them toward the patient labors of peace.