Plutarch (46-120) quotes

• A few vices are sufficient to darken many virtues.
• All men whilst they are awake are in one common world: but each of them, when he is asleep, is in a world of his own.
• An imbalance between rich and poor is the oldest and most fatal ailment of all republics.
• Do not speak of your happiness to one less fortunate than yourself.
• I don't need a friend who changes when I change and who nods when I nod; my shadow does that much better.
• It is indeed a desirable thing to be well-descended, but the glory belongs to our ancestors.
• It is part of a good man to do great and noble deeds, though he risk everything.
• Know how to listen, and you will profit even from those who talk badly.
• Nothing is harder to direct than a man in prosperity; nothing more easily managed that one is adversity.