Silence is one great art of conversation.

You can't improve on saying nothing.

Silence is one of the hardest arguments to refute.

... silence (can) be the most eloquent form of lying.

A word is worth one coin; silence is worth two.

Never forget that when we are silent, we are one. And when we speak, we are two.

Nothing is so good for an ignorant man as silence, and if he knew this, he would no longer be ignorant.

Silence is the element in which great things fashion themselves together, that at length they may emerge, full-formed and majestic, into the daylight of Life, which they are henceforth to rule.

By diminishing the value of silence, publicity has also diminished that of language. The two are inseparable: knowing how to speak has always meant knowing how to keep silent, knowing that there are times when one should say nothing.

The right word may be effective, but no word was ever as effective as a rightly timed pause.