This epistle on war is available on Project Gutenberg:
https://www.gutenberg.org/ebooks/39487
Although it has been said (in the excellent Stanford Encyclopedia of Philosophy article) that Erasmus' pacifist arguments are "commonplace," perhaps it is the form of expression and depth of insight (as Huizinga points out) that still seem so compelling. Here is an excerpt:
"It is near hand two thousand years since the physicians had knowledge of three hundred divers notable sicknesses by name, besides other small sicknesses and new, as daily spring among us, and besides age also, which is of itself a sickness inevitable.
"We read that in one place whole cities have been destroyed with earthquakes. We read, also, that in another place there have been cities altogether burnt with lightning; how in another place whole regions have been swallowed up with opening of the earth, towns by undermining have fallen to the ground; so that I need not here to remember what a great multitude of men are daily destroyed by divers chances, which be not regarded because they happen so often: as sudden breaking out of the sea and of great floods, falling down of hills and houses, poison, wild beasts, meat, drink, and sleep. One hath been strangled with drinking of a hair in a draught of milk, another hath been choked with a little grapestone, another with a fishbone sticking in his throat. There hath been, that sudden joy hath killed out of hand: for it is less wonder of them that die for vehement sorrow. Besides all this, what mortal pestilence see we in every place. There is no part of the world, that is not subject to peril and danger of man’s life, which life of itself also is most[Pg 30] fugitive. So manifold mischances and evils assail man on every side that not without cause Homer did say: Man was the most wretched of all creatures living.
"But forasmuch these mischances cannot lightly be eschewed, nor they happen not through our fault, they make us but only wretched, and not ungracious withal. What pleasure is it then for them that be subject already to so many miserable chances, willingly to seek and procure themselves another mischief more than they had before, as though they yet wanted misery? Yea, they procure not a light evil, but such an evil that is worse than all the others, so mischievous, that it alone passeth all the others; so abundant, that in itself alone is comprehended all ungraciousness; so pestilent, that it maketh us all alike wicked as wretched, it maketh us full of all misery, and yet not worthy to be pitied.
"Now go farther, and with all these things consider, that the commodities of Peace spread themselves most far and wide, and pertain unto many men. In war if there happen anything luckily (but, O good Lord, what may we say happeneth well and luckily in war?), it pertaineth to very few, and to them that are unworthy to have it. The prosperity of one is the destruction of another. The enriching of one is the spoil and robbing of another. The triumph of one is the lamentable mourning of another, so that as the infelicity[Pg 31] is bitter and sharp, the felicity is cruel and bloody. . . ."