Not every one who has the gift of speech understands the value of silence.
The craftiest trickery are too short and ragged a cloak to cover a bad heart.
Be certain that he who has betrayed thee once will betray thee again.
If you see one cold and vehement at the same time, set him down for a fanatic.
He knows very little of mankind who expects, by any facts or reasoning, to convince a determined party man.
Close thine ear against him that shall open his mouth secretly against another. If thou receivest not his words, they fly back and wound the reporter. If thou dost receive them, they fly forward and wound the receiver.