That the outer man is a picture of the inner, and the face an expression and revelation of the whole character, is a presumption likely enough in itself, and therefore a safe one to go on; borne out as it is by the fact that people are always anxious to see anyone who has made himself famous … . Photography … offers the most complete satisfaction of our curiosity.

— Schopenhauer, Counsels and Maxims, Parerga and Paralipomena, 1851, Ch. 29, Vol. 2, p. 377