Any peace is better than any war
Those who are too smart to engage in politics are punished by being governed by those who are dumber.
Pepper is small in quantity and great in virtue.
And tell him it's quite true that the best of the philosophers are of no use to their fellows; but that he should blame, not the philosophers, but those who fail to make use of them.
Man was not made for himself alone
A work well begun is half-ended.