Reason is immortal, all else mortal – 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

Do not say a little in many words but a great deal in a few – Pythagoras

Do not talk a little on many subjects, but much on a few – Pythagoras

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

Strength of mind rests in sobriety; for this keeps your reason unclouded by passion – Pythagoras