Photios I of Constantinople
Photios I of Constantinople writes against Clement's theology in the "Bibliotheca", although he is appreciative of Clement's learning and the literary merits of his work. In particular, he is highly critical of the "Hypotyposes", a work of biblical exegesis of which only a few fragments have survived. Photios compared Clement's treatise, which, like his other works, was highly syncretic, featuring ideas of Hellenistic, Jewish, and Gnostic origin, unfavorably against the prevailing orthodoxy of the 9th century. Amongst the particular ideas Photios deemed heretical were: