“Keep silence for the most part, and speak only when you must, and then briefly.”
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Epictetus 175
philosopher from Ancient Greece 50–138Related quotes

“When I speak, you must not listen to the words, my dear. Listen to the Silence.”
Comprehension
One Minute Wisdom (1989)

“He or silence keeps or speaks in season.”
Source: Seven Against Thebes (467 BC), line 619 (tr. Anna Swanwick)
“Aphorisms respect the wisdom of silence by disturbing it, but briefly.”
"Where Epics Fail: Aphorisms on Art, Morality & Spirit" (2018)
“Men repent speaking ten times, for once that they repent keeping silence.”
The Dignity of Human Nature (1754)
Context: Men repent speaking ten times, for once that they repent keeping silence.
It is an advantage to have concealed one's opinion; for by that means you may change your judgment of things (which every wise man fmds reason to do) and not be accused of fickleness.

“Silence is the only language god speaks.”
Source: Dime-Store Alchemy

1960s, Beyond Vietnam: A Time to Break Silence (1967)
Context: Even when pressed by the demands of inner truth, men do not easily assume the task of opposing their government's policy, especially in time of war. Nor does the human spirit move without great difficulty against all the apathy of conformist thought within one's own bosom and in the surrounding world. Moreover, when the issues at hand seem as perplexing as they often do in the case of this dreadful conflict, we are always on the verge of being mesmerized by uncertainty; but we must move on.
And some of us who have already begun to break the silence of the night have found that the calling to speak is often a vocation of agony, but we must speak. We must speak with all the humility that is appropriate to our limited vision, but we must speak.
Context: Even when pressed by the demands of inner truth, men do not easily assume the task of opposing their government's policy, especially in time of war. Nor does the human spirit move without great difficulty against all the apathy of conformist thought within one's own bosom and in the surrounding world. Moreover, when the issues at hand seem as perplexing, as they often do in the case of this dreadful conflict, we're always on the verge of being mesmerized by uncertainty. But we must move on. Some of us who have already begun to break the silence of the night have found that the calling to speak is often a vocation of agony. But we must speak. We must speak with all the humility that is appropriate to our limited vision, but we must speak. And we must rejoice as well, for in all our history there has never been such a monumental dissent during a war, by the American people.