“The discreet man finds out the talents of those he converses with, and knows how to apply them to proper uses. Accordingly, if we look into particular communities and divisions of men, we may observe that it is the discreet man, not the witty, nor the learned, nor the brave, who guides the conversation, and gives measures to the society.”

Source: The Analects

Introductio ad prudentiam: Part II (1727)

On the Priesthood http://www.ccel.org/ccel/schaff/npnf109/Page_41.html, Book II

About King Charles II of England, as quoted in Blackwood's Edinburgh Magazine Vol. XLIV (January - June 1857) p. 592; It is said to that this was written on the door of Charles II’s bedchamber, and that on seeing it, the king replied, “This is very true: for my words are my own, and my actions are my ministers’....”
Other

Hagakure (c. 1716)

No. 225.
The Tatler (1711–1714)
Context: The cast of mind which is natural to a discreet man, make him look forward into futurity, and consider what will be his condition millions of ages hence, as well as what it is at present. He knows that the misery or happiness which are reserved for him in another world, lose nothing of their reality by being placed at so great a distance from him. The objects do not appear little to him because they are remote. He considers that those pleasures and pains which lie hid in eternity, approach nearer to him every moment, and will be present with him in their full weight and measure, as much as those pains and pleasures which he feels at this very instant. For this reason he is careful to secure to himself that which is the proper happiness of his nature, and the ultimate design of his being. He carries his thoughts to the end of every action, and considers the most distant as well as the most immediate effects of it. He supersedes every little prospect of gain and advantage which offers itself here, if he does not find it consistent with his views of an hereafter. In a word, his hopes are full of immortality, his schemes are large and glorious, and his conduct suitable to one who knows his true interest, and how to pursue it by proper methods.

Book I, Chapter 5, "We Have Cause to Be Uneasy"
Mere Christianity (1952)
Context: We have two bits of evidence about the Somebody. One is the universe He has made. If we used that as our only clue, I think we should have to conclude that He was a great artist (for the universe is a very beautiful place), but also that He is quite merciless and no friend to man (for the universe is a very dangerous and terrifying place.)... The other bit of evidence is that Moral Law which He has put in our minds. And this is a better bit of evidence than the other, because it is inside information. You find out more about God from the Moral Law than from the universe in general just as you find out more about a man by listening to his conversation than by looking at a house he has built.

VI. 488–489 (tr. Robert Fagles).
Iliad (c. 750 BC)