
“Only the dead are safe; only the dead have seen the end of war.”
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"