The fact that religious faith has left its mark on every aspect of our civilization is not an argument in its favor, nor can any particular faith be … - Sam Harris

Incompatible religious doctrines have balkanized our world into separate moral communities, and these divisions have become a continuous source of bloodshed. Indeed, religion is as much a living spring of violence today as it has been at any time in the past. The recent conflicts in Palestine (Jews vs. Muslims), the Balkans (Orthodox Serbians vs. Catholic Croatians; Orthodox Serbians vs. Bosnian and Albanian Muslims), Northern Ireland (Protestants vs. Catholics), Kashmir (Muslims vs. Hindus), Sudan (Muslims vs. Christians and animists), Nigeria (Muslims vs. Christians), Ethiopia and Eritrea (Muslims vs. Christians), Sri Lanka (Sinhalese Buddhists vs. Tamil Hindus), Indonesia (Muslims vs. Timorese Christians), Iran and Iraq (Shiite vs. Sunni Muslims), and the Caucasus (Orthodox Russians vs. Chechen Muslims; Muslim Azerbaijanis vs. Catholic and Orthodox Armenians) are merely a few cases in point. These are places where religion has been the explicit cause of literally millions of deaths in recent decades.

Why is religion such a potent source of violence? There is no other sphere of discourse in which human beings so fully articulate their differences from one another, or cast these differences in terms of everlasting rewards and punishments. Religion is the one endeavor in which us–them thinking achieves a transcendent significance. If you really believe that calling God by the right name can spell the difference between eternal happiness and eternal suffering, then it becomes quite reasonable to treat heretics and unbelievers rather badly. The stakes of our religious differences are immeasurably higher than those born of mere tribalism, racism, or politics.

we are all prisoners of our thoughts.

Western engagement with Eastern spirituality dates back at least as far as Alexander’s campaign in India, where the young conqueror and his pet philosophers encountered naked ascetics whom they called “gymnosophists.” It is often said that the thinking of these yogis greatly influenced the philosopher Pyrrho, the father of Greek skepticism. This seems a credible claim, because Pyrrho’s teachings had much in common with Buddhism. But his contemplative insights and methods never became part of any system of thought in the West.