By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest.

Does wisdom perhaps appear on the earth as a raven which is inspired by the smell of carrion?

It is astonishing with how little wisdom mankind can be governed, when that little wisdom is its own.

Learning sleeps and snores in libraries, but wisdom is everywhere, wide awake, on tiptoe.