Tertullian

Valentinus, indeed, on the strength of his heretical system, might consistently fantasize a spiritual flesh for Christ. Any who refused to believe that that flesh was human might then pretend it to be anything he liked. This pretense characterizes all heresies. For if his flesh was not human and was not born of man, I do not see of what substance Paul himself spoke, when he said "The man Christ Jesus is the one mediator between God and man."