In conversation avoid the extremes of forwardness and reserve.

Speak briefly and to the point.

In doing nothing men learn to do evil.

All have the gift of speech, but few are possessed of wisdom.

Don't promise twice what you can do at once.

I will begin to speak, when I have that to say which had not better be unsaid.

Consider in silence whatever any one says: speech both conceals and reveals the inner soul of man.