Now the cure of self-conceit (as of every ailment) is threefold: the ascertaining of the cause, and the mode of its removal; and thirdly, the training of the soul, and the accustoming it to assume a right attitude to the judgments come to. For, just like a disordered eye, so also the soul that has been darkened by unnatural dogmas cannot perceive distinctly the light of truth, but even overlooks what is before it.