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

For a healthy beard, be sure to brush it daily and take it for a walk every evening. – BeardGuru.com

The discovery of a grey hair when you are brushing out your whiskers of a morning—first fallen flake of the coming snows of age—is a disagreeable thing…. – Alexander Smith, “An Essay on an Old Subject”