If man limits himself to a satisfied animal existence, and asks from life only what such an existence can give, the higher values of life at once disappear.

If man attempts to suppress the animal side of his nature by a sheer effort of conscious will, nature finds a hundred unexpected and unpleasant ways to take its revenge.

Man is a means and not an end, and he is a means to economic or political ends which are not really ends in themselves but means to other ends which in their turn are means and so ad infinitum

The man who is fond of books is usually a man of lofty thought, and of elevated opinions.