Plutarch

• I don't need a friend who changes when I change and who nods when I nod; my shadow does that much better.
• Know how to listen, and you will profit even from those who talk badly.
• Silence at the proper season is wisdom, and better than any speech.
• To make no mistakes is not in the power of man; but from their errors and mistakes the wise and good learn wisdom for the future.
• What we achieve inwardly will change outer reality.