“I don't believe it can end. Now that I've seen what war is, what civil war is, I know that everybody, if one day it should end, ought to ask himself: "And what shall we make of the fallen? Why are they dead?" I wouldn't know what to say. Not now, at any rate. Nor does it seem to me that the others know. Perhaps only dead know, and only for them is the war really over.”

Attributed to Plato by General Douglas MacArthur, earliest source found is work of George Santayana who doesn't attribute it to anyone. Plato and his dialogues by Bernard SUZANNE, "Frequently Asked Questions about Plato : Did Plato write "Only the dead have seen the end of war"?" http://plato-dialogues.org/faq/faq008.htm
Source: Soliloquies in England and Later Soliloquies (1922), "Tipperary"

-Heard Somebody Say
From Cripple Crow

&quot;Doing What I Know&quot; (song) <br class="br">Song lyrics <br class="br">Source: Gilbert O&#x27;Sullivan, &quot;Doing What I Know&quot; https://www.youtube.com/watch?v=YlkC9AFrSNU (song on YouTube)

Comments to his pastor (April 1861) as quoted in Memoirs of Stonewall Jackson by His Widow Mary Anna Jackson (1895) http://books.google.com/books?id=bG2vg5cH004C, Ch. IX : War Clouds — 1860 - 1861, p. 141; This has sometimes been paraphrased as &quot;War is the sum of all evils.&quot; Before Jackson&#x27;s application of the term &quot;The sum of all evils&quot; to war, it had also been applied to slavery by abolitionist Cassius Marcellus Clay in The Writings of Cassius Marcellus Clay : Including Speeches and Addresses (1848), p. 445; to death by Georg Christian Knapp in Lectures on Christian Theology (1845), p. 404; and it had also been used, apparently in relation to arroganceus hours I received only one wound, the breaking of the longest finger of my left hand; but the doctor says the finger may be saved. It was broken about midway between the hand and knuckle, the ball passing on the side next to the forefinger. Had it struck the centre, I should have lost the finger. My horse was wounded, but not killed. Your coat got an ugly wound near the hip, but my servant, who is very handy, has so far repaired it that it doesn&#x27;t show very much. My preservation was entirely due, as was the glorious victory, to our God, to whom be all the honor, praise, and glory. The battle was the hardest that I have ever been in, but not near so hot in its fire. <br class="br">Letter to his wife after the First Battle of Bull Run (22 July 1861); as quoted in Memoirs of Stonewall Jackson by His Widow Mary Anna Jackson (1895) http://books.google.com/books?id=bG2vg5cH004C, Ch. XI : The First Battle of Manassas, p. 178 <br class="br">Q him, never let up in the pursuit so long as your men have strength to follow…]]

Source: War Horse

Pt. 3: At Sea, Section 19
Islands in the Stream (1970)

note from a letter, 1903
Quote from a letter (1903), as cited in Artists on Art, from the 14th – 20th centuries, ed. Robert Goldwater and Marco Treves; Pantheon Books, 1972, London, p. 443
1903 - 1910

Source: The Name of the Rose (1980)

Wenn ich nur dasjenige weiß, und von ihm überzeugt bin, was ich selbst gefunden, – nur dasjenige wirklich kenne, was ich selbst erfahren habe, so kann ich in der That nicht sagen, daß ich über meine Bestimmung das Geringste wisse; ich weiß blos, was Andre darüber zu wissen behaupten.
Source: The Vocation of Man (1800), P. Preuss, trans. (1987), p. 4