Normally, the sciences distance themselves from life and the return to it via a detour.

If we take people only as they are, then we make them worse; if we treat them as if they were what they should be, then we bring them to where they can be brought.

He is a man whom it is impossible to please, because he is never pleased with himself.

Every bird has its decoy, and every man is led and misled in his own peculiar way.

One is never deceived; one deceives oneself.

Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution.

While man's desires and aspirations stir he cannot choose but err.