The war at Kalinga in c. 260 BCE left Ashoka staring at conquest as slaughter. His own edict says 100,000 men and animals were killed, many more perished, and 150,000 were carried off captive. From that point, the Emperor of Magadha began to speak less of victory and more of dhamma, as if the whole empire from Pataliputra to the far edges of India had suddenly become a burden.

He had been born around 304 BCE, a Mauryan prince, the son of Bindusara and grandson of Chandragupta. The legends give his mother different names, but they agree on one thing: his name meant without sorrow. Later storytellers said he was rough-skinned and overlooked; yet Bindusara still sent him to Takshashila or Ujjain, where he learned rule before he wore the crown.

By about 268 BCE, Ashoka had become Emperor of Magadha, the third Mauryan ruler. His power reached from present-day Afghanistan to present-day Bangladesh, with Pataliputra as its capital. The inscriptions show him touring for 256 days, appointing officers called dhamma-mahamattas, and ordering wells, medicinal herbs, rest houses, and medical care for humans and animals. He was no mere king in a palace, but a ruler trying to bind a vast subcontinent together by moral instruction.

The hinge was not a miracle, but a reckoning. In his 13th Rock Edict, Ashoka says that after Kalinga he felt profound sorrow for the slaughter, death, and deportation of war. He then turned towards Buddhism gradually, not all at once. By his 10th regnal year he had visited the Bodhi Tree at Bodh Gaya, and by his 13th year he called himself an upasaka, a lay follower of the Buddha.

From there, his patronage spread outward. The Sri Lankan tradition credits him and Moggaliputta Tissa with the Third Buddhist Council, and with missions led by Mahinda to Sri Lanka and by Sanghamitta carrying a sapling of the Bodhi Tree. His own edicts also mention envoys to the Greek king Antiochos and others, and a dhamma victory that reached beyond India. Yet these same inscriptions insist on tolerance, honouring Brahmins, Ajivikas, Jains, and Buddhists alike.