The Extant Works and Fragments of Hippolytus

Now a person might say that these men, and those who hold a different opinion, are yet near neighbours, being involved in like error. For those men, indeed, either profess that Christ came into our life a mere man, and deny the talent of His divinity, or else, acknowledging Him to be God, they deny, on the other hand, His humanity, and teach that His appearances to those who saw Him as man were illusory, inasmuch as He did not bear with Him true manhood, but was rather a kind of phantom manifestation. Of this class are, for example, Marcion and Valentinus, and the Gnostics, who sunder the Word from the flesh, and thus set aside the one talent, viz., the incarnation.