“One who trusts others too quickly* is lightminded, and one who sins does wrong to himself. One who rejoices in wickedness will be condemned, and for one who hates gossip evil is lessened.
Never repeat a conversation, and you will lose nothing at all. With friend or foe do not report it, and unless it would be a sin for you, do not disclose it; for some one has heard you and watched you, and when the time comes he will hate you.
Have you heard a word? Let it die with you. Be brave! It will not make you burst!” (Sir. 19:4-10)
*At all, really