It was a clever remark of Antiphon, who (when one regarded it as an ill omen that the sow had eaten her pigs), on seeing her emaciated through the niggardliness of the person that kept her, said, Congratulate yourself on the omen that, being so hungry, she did not eat your own children.
"And what wonder is it," says Bion, "if the mouse, finding nothing to eat, gnaws the bag?" For it were wonderful if (as Arcesilaus argued in fun) "the bag had eaten the mouse."
Diogenes accordingly remarked well to one who wondered at finding a serpent coiled round a pestle: "Don't wonder; for it would have been more surprising if you had seen the pestle coiled round the serpent, and the serpent straight."
For the irrational creatures must run, and scamper, and fight, and breed, and die; and these things being natural to them, can never be unnatural to us.
"And many birds beneath the sunbeams walk."
And the comic poet Philemon treats such points in comedy:--