The oldest, shortest words – ‘yes’ and ‘no’ – are those which require the most thought – Pythagoras

Concern should drive us into action and not into a depression. No man is free who cannot control himself – Pythagoras

No one is free who has not obtained the empire of himself – Pythagoras

Silence is better than unmeaning words – Pythagoras

The most momentous thing in human life is the art of winning the soul to good or evil – Pythagoras

Begin thus from the first act, and proceed; and, in conclusion, at the ill which thou hast done, be troubled, and rejoice for the good