λόγον περὶ θεοῦ σιγᾶν ἄμεινον ἢ προπετῶς διαλέγεσθαι. (In talk about God, silence is better than reckless words.) (Sextus 366)
As quoted in Encyclopaedia Americana (1832) Vol. X, p. 445 edited by Francis Lieber, E. Wigglesworth, and Thomas Gamaliel Bradford
More quotes by Pythagoras
Let no one persuade you by word or deed to do or say whatever is not best for you.
Rest satisfied with doing well, and leave others to talk of you as they please.
Number is the ruler of forms and ideas, and the cause of gods and daemons.
Assist a man in raising a burden; but do not assist him in laying it down.
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To sin by silence, when we should protest,
Makes cowards out of men.
Blessed is the man who, having nothing to say, abstains from giving us wordy evidence of the fact.
There are times when good words are to be left unsaid out of esteem for silence.
Attribution
Quote text and notes from Wikiquote: Pythagoras (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.