The oldest and best known evil was ever more supportable than one that was new and untried. - Michel de Montaigne

A man may be humble through vainglory.

Let every foot have its own shoe.

You never speak about yourself without loss. Your self-condemnation is always accredited, your self-praise discredited. There may be some people of my temperament, I who learn better by contrast than by example, and by flight than by pursuit. This was the sort of teaching that Cato the Elder had in view when he said that the wise have more to learn from the fools than the fools from the wise; and also that ancient lyre player who, Pausanias tells us, was accustomed to force his pupils to go hear a bad musician who lived across the way, where they might learn to hate his discords and false measures.