Indeed, Beloved-of-the-Gods is deeply pained by the killing, dying and deportation that take place when an unconquered country is conquered. But Beloved-of-the-Gods is pained even more by this -- that Brahmans, ascetics, and householders of different religions who live in those countries, and who are respectful to superiors, to mother and father, to elders, and who behave properly and have strong loyalty towards friends, acquaintances, companions, relatives, servants and employees -- that they are injured, killed or separated from their loved ones. Even those who are not affected (by all this) suffer when they see friends, acquaintances, companions and relatives affected. These misfortunes befall all (as a result of war), and this pains Beloved-of-the-Gods.

The Edicts of King Asoka, born 304 BC. In the aftermath of the conquest of Kalinga, horrified by the atrocities of war, Asoka turned inward and practiced the principles of Buddhism with a new zeal.

You can catch the whole story, with added musical numbers and a love in interest, in the 2001 Bollywood Epic Asoka.