I'm a libertine, but it's not my specialty. — Primo Levi

Beware of analogies: for millenia they corrupted medicine, and it may be their fault that today's pedagogical systems are so numerous, and after three thousand years of argument we still don't know which is best.

Nothing can be said: nothing sure, nothing probable, nothing honest. Better to err through omission than through commission: better to refrain from steering the fate of others, since it is already so difficult to navigate one's own.