It is better to be silent and be real than to talk and not be real. Ignatius of Antioch
Rest satisfied with doing well, and leave others to talk of you as they will. Pythagoras
Do not be quick to talk about three things: about God until you establish faith in Him, about another's sin until you remember your own and about tomorrow until you see the dawn. Nikolaj Velimirovic
It's bad manners to talk about ropes in the house of a man whose father was hanged. Irish Proverb
Not everything that is good to eat is good to talk about. Jamaican Proverb
To sing to the deaf, to talk with the dumb, and to dance for the blind are three foolish things. Hindi Proverb