“If we are understood, more words are unnecessary; if we are not likely to be understood, they are useless.”

Source: Life Thoughts (1858), p. 28

Preface: The Theater and Culture
The Theatre and Its Double (1938, translated 1958)

An Old Man's Thoughts on Many Things, Of Education I

Source: Peony in Love

Source: What I Saw and How I Lied

Source: The Life of St. Teresa of Jesus (c.1565), Ch. XXV. "Divine Locutions. Discussions on That Subject" ¶ 1 & 2
Context: It will be as well, I think, to explain these locutions of God, and to describe what the soul feels when it receives them, in order that you, my father, may understand the matter; for ever since that time of which I am speaking, when our Lord granted me that grace, it has been an ordinary occurrence until now, as will appear by what I have yet to say.
The words are very distinctly formed; but by the bodily ear they are not heard. They are, however, much more clearly understood than they would be if they were heard by the ear. It is impossible not to understand them, whatever resistance we may offer. When we wish not to hear anything in this world, we can stop our ears, or give attention to something else: so that, even if we do hear, at least we can refuse to understand. In this locution of God addressed to the soul there is no escape, for in spite of ourselves we must listen; and the understanding must apply itself so thoroughly to the comprehension of that which God wills we should hear, that it is nothing to the purpose whether we will it or not; for it is His will, Who can do all things.

The Art of War, Chapter X · Terrain
Context: If words of command are not clear and distinct, if orders are not thoroughly understood, the general is to blame. But if his orders are clear, and the soldiers nevertheless disobey, then it is the fault of their officers.

Book III, Ch. 10, sec. 31
An Essay Concerning Human Understanding (1689)

Source: On Writing Well (Fifth Edition, orig. pub. 1976), Chapter 2, Simplicity, p. 7.