If you had half as much brains as you have beard, you would have looked before you leaped. – Aesop [Context note: The beard here mentioned is on a goat. The fox is speaking

There is always a period when a man with a beard shaves it off. This period does not last. He returns headlong to his beard. – Jean Cocteau (1889–1963), translated from French

If you think that to grow a beard is to acquire wisdom, a goat with a fine beard is at once a complete Plato. – Lucian of Samosata, in The Greek Anthology, Volume IV, “Book XI: The Convivial a

But he wore a moustache—a shaggy moustache too: nothing in the meek and merciful way, but quite in the fierce and scornful style: the regular Satanic sort of thing—and he wore, besides, a vast quantity of unbrushed hair. – Charles Dickens, The Life and Adventures of Martin Chuzzlewit, 1843