With regard to philosophical metaphysics, I always see increasing numbers who have attained to the negative goal, but as yet few who climb a few rungs backwards; one ought to look out, perhaps, over the last steps of the ladder, but not try to stand upon them.

A pair of powerful spectacles has sometimes sufficed to cure a person in love.

Experience, as a desire for experience, does not come off. We must not study ourselves while having an experience.

The most dangerous physicians are those born actors who imitate born physicians with a perfectly deceptive guile.

What is new, however, is always evil, being that which wants to conquer and overthrow the old boundary markers and the old pieties; and only what is old is good. The good men are in all ages those who dig the old thoughts, digging deep and getting them to bear fruit - the farmers of the spirit. But eventually all land is depleted, and the ploughshare of evil must come again and again.

One begins to mistrust very clever people when they become embarrassed.

Anyone who has looked deeply into the world may guess how much wisdom lies in the superficiality of men. The instinct that preserves them teaches them to be flighty light, and false.