Misfortunes, untoward events, lay open, disclose the skill of a general, while success conceals his weakness, his weak points.
Unless the vessel be pure, everything which is poured into it will turn sour.
The consummate pleasure (in eating) is not in the costly flavour, but in yourself. Do you seek for sauce for sweating?
To grow a philosopher's beard.
Having no business of his own to attend to, he busies himself with the affairs of others.
Whatever things injure your eye you are anxious to remove; but things which affect your mind you defer.