The Mongols loved competitions of all sorts, and they organized debates among rival religions the same way they organized wrestling matches … In this case Mongke Khan ordered them to debate before three judges: a Christian, a Muslim, and a Buddhist …
In the initial round, Rubruck faced a Buddhist from North China who began by asking how the world was made and what happened to the soul after death. Rubruck countered that the Buddhist monk was asking the wrong questions; the first issue should be about God from whom all things flow. The umpires awarded the first points to Rubruck. Their debate ranged back and forth over the topics of evil versus good, God’s nature, what happens to the souls of animals, the existence of reincarnation, and whether God had created evil …
Between each round of wrestling, Mongol athletes would drink fermented mare’s milk; in keeping with that tradition, after each round of the debate, the learned men paused to drink deeply in preparation for the next match. No side seemed to convince the other of anything. Finally, as the effects of the alcohol became stronger, the Christians gave up trying to persuade anyone with logical arguments, and resorted to singing. The Muslims, who did not sing, responded by loudly reciting the Koran in an effort to drown out the Christians, and the Buddhists retreated into silent meditation. At the end of the debate, unable to convert or kill one another, they concluded the way most Mongol celebrations concluded, with everyone simply too drunk to continue.