But do you want to hear from the Greeks expressly of one first principle? Timæus the Locrian, in the work on Nature, shall testify in the following words: “There is one first principle of all things unoriginated. For were it originated, it would be no longer the first principle; but the first principle would be that from which it originated.” For this true opinion was derived from what follows: “Hear,” it is said, “O Israel; the Lord thy God is one, and Him only shalt thou serve.”