“From the point of view of the moralist the animal world is on about the same level as a gladiator’s show,” Huxley wrote, “the strongest, the swiftest, and the cunningest . . . living to fight another day.” There was no need for the spectator to turn his thumbs down, “as no quarter is given,” but “he must shut his eyes if he would not see that more or less enduring suffering is the meed of both vanquished and victor.”