Plato

The excessive increase of anything causes a reaction in the opposite direction.

All men are by nature equal, made all of the same earth by one Workman; and however we deceive ourselves, as dear unto God is the poor peasant as the mighty prince.

Any man may easily do harm, but not every man can do good to another.

Evil has no substance of its own, but is only the defect, excess, perversion, or corruption of that which has substance.

The splendid empire of Charles the Fifth was erected upon the grave of liberty.