God permits that kind of temptation in order to impress you with a deeper sense of your own nothingness, and to convince you that, deprived of His grace, you would be capable of committing the most heinous crimes. Therefore act prudently, avoid all dangerous intercourse, watch over your eyes, your heart, and all your affections; be very modest, be circumspect in all your actions, by night as well as by day; love holy modesty.
— Saint Paul of the Cross (1694-1775)