On the whale's ability to maintain temperature

It does seem to me, that herein we see the rare virture of a strong individual vitality, and the rare virtue of thick walls, and the rare virtue of interior spaciousness. Oh, man! admire and model thyself after the whale! Do thou, too, remain warm among ice. Do thou, too, live in this world without being of it. Be cool at the equator; keep thy blood fluid at the Pole. Like the great dome of St. Peter's, and like the great whale, retain, O man! in all seasons a temperature of thine own.

–Herman Melville Moby Dick