In dwelling, be close to the land.
In meditation, delve deep into the heart.
In dealing with others, be gentle and kind.
In speech, be true.
In work, be competent.
In action, be careful of your timing.
-- Laozi

If A equals success, then the formula is A = X + Y + Z.
X is work. Y is play. Z is keep your mouth shut.
-- Albert Einstein

La nostra patria è il mondo, come ai pesci il mare.
-- Dante Alighieri

Prima di parlare, taci.
-- Venetian proverb