“Those who have come alive out of a blood-bath live longer and have more children.”

1994
September
Avoiding AIDS
Ron Paul Survival Report
2
http://www.tnr.com/sites/default/files/September1994.pdf, quoted in * 2011-12-23
TNR Exclusive: A Collection of Ron Paul's Most Incendiary Newsletters
New Republic
http://www.tnr.com/article/politics/98883/ron-paul-incendiary-newsletters-exclusive
Disputed, Newsletters, Ron Paul Survival Report

the cathedral pastor visiting Ólafur
Heimsljós (World Light) (1940), Book Four: The Beauty of the Heavens

Entry (1977)
Eric Hoffer and the Art of the Notebook (2005)
Context: I could never figure out — or probably did not take the trouble to figure out — what the great philosophical problems are about. The momentous statements I come across are at best a storm in a teacup. There are quite a number of people who have a vested interest in the stuff, make a noble living out of it, and they conspire with one another to keep it alive.

Letter to James E. Yeatman of St. Louis, Vice-President of the Western Sanitary Commission (21 May 1865). As quoted on p. 358, and footnoted on p. 562, in Sherman: A Soldier's Passion For Order https://en.wikiquote.org/wiki/Special:BookSources/080938762X (2007), John F. Marszalek, Southern Illinois University Press, Chapter 15 ('Fame Tarnished')
Variant text: I confess, without shame, that I am sick and tired of fighting — its glory is all moonshine; even success the most brilliant is over dead and mangled bodies, with the anguish and lamentations of distant families, appealing to me for sons, husbands, and fathers […] it is only those who have never heard a shot, never heard the shriek and groans of the wounded and lacerated […] that cry aloud for more blood, more vengeance, more desolation. […] I declare before God, as a man and a soldier, I will not strike a foe who stands unarmed and submissive before me, but would rather say—‘Go, and sin no more.’
As quoted in Sherman: Merchant of Terror, Advocate of Peace https://en.wikiquote.org/wiki/Special:BookSources/1455611891 (1992), Charles Edmund Vetter, Pelican Publishing, p. 289
See the Discussion Page for more extensive sourcing information.
1860s, 1865, Letter to James E. Yeatman (May 1865)
Context: I confess without shame that I am tired & sick of war. Its glory is all moonshine. Even success, the most brilliant is over dead and mangled bodies […] It is only those who have not heard a shot, nor heard the shrills & groans of the wounded & lacerated (friend or foe) that cry aloud for more blood & more vengeance, more desolation & so help me God as a man & soldier I will not strike a foe who stands unarmed & submissive before me but will say ‘Go sin no more.

Address to US forces after the of Battle of Chapultepec in the Mexican-American War (September 1847) as quoted in The Life and Military and Civic Services of Lieut-Gen. Winfield Scott (1861) by Orville James Victor, p. 106.

1900s, The Moral Equivalent of War (1906)

Speech at the University of Las Villas (1959)
Source: Che Guevara Talks to Young People
Context: The walls of the educational system must come down. Education should not be a privilege, so the children of those who have money can study. Education should be the daily bread of the people of Cuba.

On Literature, Revolution, Entropy and Other Matters (1923)
Context: A new form is not intelligible to everyone; many find it difficult. Perhaps. The ordinary, the banal is, of course, simpler, more pleasant, more comfortable. Euclid's world is very simple, and Einstein's world is very difficult — but it is no longer possible to return to Euclid. No revolution, no heresy is comfortable or easy. For it is a leap, it is a break in the smooth evolutionary curve, and a break is a wound, a pain. But the wound is necessary: most of mankind suffers from hereditary sleeping sickness, and victims of this sickness (entropy) must not be allowed to sleep, or it will be their final sleep, death.
The same disease often afflicts artists and writers: they sink into satiated slumber in forms once invented and twice perfected. And they lack the strength to wound themselves, to cease loving what they once loved, to leave their old, familiar apartments filled with the scent of laurel leaves and walk away into the open field, to start anew.
Of course, to wound oneself is difficult, even dangerous. But for those who are alive, living today as yesterday and yesterday as today is still more difficult.