Ursula K. Le Guin Quote

As we did without clergy, let us do without soldiers. The joy built upon successful slaughter is not the right kind of joy; it will not do; it is fearful and it is trivial. A boundless and generous contentment, a magnanimous triumph felt not against some outer enemy but in communion with the finest and fairest in the souls of all men everywhere and the splendor of the world's summer: this is what swells the hearts of the people of Omelas, and the victory they celebrate is that of life.

The Ones Who Walk Away from Omelas p. 255 (originally published in New Dimensions 3, edited by Robert Silverberg) - Short fiction - The Wind's Twelve Quarters (1975)