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 Phaedon instead of Bowditch in his head. Beware of such an one, I say: your whales must be seen before they can be killed; and this sunken-eyed young Platonist will tow you ten wakes round the world, and never make you one pint of sperm the richer.