3. How then did the Lord answer those that were marvelling how He knew letters which He had not learned? “My doctrine,” saith He, “is not mine, but His that sent me.” This is the first profundity. For He seems as if in a few words He had spoken contraries. For He says not, This doctrine is not mine; but, “My doctrine is not mine.” If not Thine, how Thine? If Thine, how not Thine? For Thou sayest both: both, “my doctrines;” and, “not mine.” For if He had said, This doctrine is not mine, there would have been no question. But now, brethren, in the first place, consider well the question, and so in due order expect the solution. For he who sees not the question proposed, how can he understand what is expounded? The subject of inquiry, then, is