Tertullian

But when they say, "What has undergone death is dead," and, "Enjoy life whilst you live," and, "After death all things come to an end, even death itself; "then I must remember both that "the heart of man is ashes," according to the estimate of God, and that the very "Wisdom of the world is foolishness," (as the inspired word) pronounces it to be. Then, if even the heretic seek refuge in the depraved thoughts of the vulgar, or the imaginations of the world, I must say to him: Part company with the heathen, O heretic! for although you are all agreed in imagining a God, yet while you do so in the name of Christ, so long as you deem yourself a Christian, you are a different man from a heathen: give him back his own views of things, since he does not himself learn from yours.