And let me in this place movingly admonish you, ye ship-owners of Nantucket! Beware of enlisting in your vigilant fisheries any lad with lean brow and hollow eye; given to unseasonable meditativeness; and who offers to ship with the Phædon instead of Bowditch in his head. Beware of such an one, I say: your whales must be seen before they can be killed...

Author: Herman Melville