When death, pain, and destruction are visited upon what you hold to be most
sacred, the spiritual price is devastating. What hurts more than one's own
suffering is bearing witness to the suffering of others. The regret of seeing
human beings at their worst and the sheer pain of not being able to help the
victims can never be redeemed. If you go personally to war, you cross the line
yourself. You sacrifice ideals for survival and the fury of killing. That alters
you forever. That is why no one rushes to be a veteran. Think before you want to
change so unalterably. The stakes are not merely one's life, but one's very
humanity.
Deng Ming-Dao, "365 Tao - Daily Meditations", #179