For indeed this was a cause of men’s going unto great vice, bringing in a twofold wickedness. For he, whose practice it had been to slight his own faults, great as they were, and to search bitterly into those of others, being slight and of no account, was spoiling himself two ways: first, by thinking lightly of his own faults; next, by incurring enmities and feuds with all men, and training himself every day to extreme fierceness, and want of feeling for others.