The War Prayer.

"In 1904, disgusted by the aftermath of the Spanish-American War and the subsequent Philippine-American War, Mark Twain wrote a short anti-war prose poem called "The War Prayer." His family begged him not to publish it, his friends advised him to bury it, and his publisher rejected it, thinking it too inflammatory for the times. Twain agreed, but instructed that it be published after his death, saying famously: None but the dead are permitted to tell the truth."