Beauty is everywhere a welcome guest.

A man would create another man if one did not already exist, but a woman might live an eternity without even thinking of reproducing her own sex.

No wise combatant underestimates their antagonist.

Nothing tells more about the character of a man than the things he makes fun of.

Everyone only hears what he understands.

Everything factual is, in a sense, theory. The blue of the sky exhibits the basic laws of chromatics. There is no sense in looking for something behind phenomena: they are theory.

Nature has neither core nor skin: she’s both at once outside and in.