As rust corrupts iron, so envy corrupts man.
Quarrels often arise in marriages when the bridal gifts are excessive.
Not to unlearn what you have learned is the most necessary kind of learning.
We must not contradict, but instruct him that contradicts us; for a madman is not cured by another running mad also.
We weed out the darnel from the corn and the unfit in war, but do not excuse evil men from the service of the state.
Royalty does good and is badly spoken of.