Quod Deterius Potiori Insidiari Soleat

Moses says in the next passage that the Lord God set a mark upon Cain in order to prevent any one who found him from slaying him; but what this mark is, he has not shown, although he is in the habit of explaining the nature of everything by a sign, as he does in the affairs of Egypt, where God changed his rod into a serpent, and withered the hand of Moses till it became like snow, and turned the river into blood.

Or may we not suppose that this mark was set upon Cain to prevent his being slain, as a token that he would never be destroyed? For he has never once mentioned his death in the whole of the law, showing enigmatically that, like that fabulous monster Scylla, so also folly is an undying evil, which never entirely perishes, and yet which as to its capability of dying receives all time, and is never wholly free from death. And I would that the opposite event might happen, that all evils might be utterly eradicated, and might endure total destruction; but as it is they are constantly budding forth, and inflict an incurable disease on all who are once infected by them.