Man is born a barbarian, and only raises himself above the beast by culture.
Politeness is the chief sign of culture.
Many get the repute of being witty but thereby lose the credit of being sensible. Jest has its little hour, seriousness should have all the rest.
Nature often lets us down when we most need her; let us turn to art.
Be first the master of yourself
For a thing to remain undone nothing more is needed than to think of it done.