Say what you mean and mean what you say.

Speak only what is useful and beneficial.

Say what you think; think what you mean.

Let your words be as few as will express the sense you wish to convey and above all let what you say be true. — Stonewall Jackson

Say what we mean, and mean what we say. If we don’t know what we mean, be quiet and think about it. If our answer is, “I don’t know,” say “I don’t know.” Learn to be concise. Stop taking people all around the block. Get to the point and when we make it, stop.

Speak properly, and in as few words as you can, but always plainly; for the end of speech is not ostentation, but to be understood.

Say all you have to say in the fewest possible words, or your reader will be sure to skip them; and in the plainest possible words or he will certainly misunderstand them.

DON'T SAY, DO

Do not say things
You think I want to hear.
Instead,
Say what you sincerely mean,
And really intend to do.
Do not think you are helping me
By occasionally
Being here or there,
If you really have no intention
Of holding my hand
All the way through.
Do not say you care for me,
If you do not care
Whenever I'm clearly
Down and blue.
And do not want what's best
For you,
If you do not wish the best
For me too.
Do not calculate gifts or deeds
Or your giving will never feel
Genuinely true.
Just say what you mean
And mean what you say,
And let's lay these down –
As our love's
Golden rules.

First learn the meaning of what you say, and then speak.

Let silence be your general rule; or say only what is necessary and in few words.

If you can't say it simply and clearly, keep quiet, and keep working on it till you can.

Be Impeccable With Your Word. Speak with integrity. Say only what you mean. Avoid using the word to speak against yourself or to gossip about others. Use the power of your word in the direction of truth and love.

Say what you have to say, not what you ought. Any truth is better than make-believe.

Never say more than is necessary.