Although Ashoka was victorious in this horrific and gruesome war, he felt remorse for all the suffering he had caused and hence turned to Buddhism. He wrote in his Edict Thirteen that:
The Kalingas were conquered by His Sacred Majesty the King when he had been consecrated for eight years. One hundred and fifty thousand persons were thence carried away captive, and one hundred thousand were there slain, and many times that number perished. Directly after the annexation of the Kalingas, began his Sacred Majesty's zealous protection of Dharma, his love of Dharma, and his giving instruction in that. Thus arose His Sacred Majesty's remorse for having conquered the Kalingas, because the conquest of a country previously unconquered involves the slaughter, death, and carrying away captive of the people. That is a matter of profound sorrow and regret to His Sacred Majesty.