[182] For then the diseases of the soul are truly not only difficult of cure, but even utterly incurable, when, though conviction is present to us (and this is the word of God, coming as his angel and as our guide, and removing the obstacles before our feet, so that we may travel without stumbling along the level road), we nevertheless prefer our own indiscreet opinions, to the explanations and injunctions which he is accustomed to address to us for our admonition, and for the chastening and regulating of our whole life.