monotheism explains order, but is mystified by evil. Dualism explains evil, but is puzzled by order. There is one logical way of solving the riddle: … - Yuval Noah Harari

How did Homo sapiens manage to cross this critical threshold, eventually founding cities comprising tens of thousands of inhabitants and empires ruling hundreds of millions? The secret was probably the appearance of fiction. Large numbers of strangers can cooperate successfully by believing in common myths. Any large-scale human cooperation – whether a modern state, a medieval church, an ancient city or an archaic tribe – is rooted in common myths that exist only in people’s collective imagination.

Secularism should not be equated with Stalinist dogmatism or with the bitter fruits of Western imperialism and runaway industrialisation. Yet it cannot shirk all responsibility for them, either. Secular movements and scientific institutions have mesmerised billions with promises to perfect humanity and to utilise the bounty of planet Earth for the benefit of our species. Such promises resulted not just in overcoming plagues and famines, but also in gulags and melting ice caps. You might well argue that this is all the fault of people misunderstanding and distorting the core secular ideals and the true facts of science. And you are absolutely right. But that is a common problem for all influential movements.
For example, Christianity has been responsible for great crimes such as the Inquisition, the Crusades, the oppression of native cultures across the world, and the disempowerment of women. A Christian might take offence at this and retort that all these crimes resulted from a complete misunderstanding of Christianity. Jesus preached only love, and the Inquisition was based on a horrific distortion of his teachings. We can sympathise with this claim, but it would be a mistake to let Christianity off the hook so easily. Christians appalled by the Inquisition and by the Crusades cannot just wash their hands of these atrocities – they should rather ask themselves some very tough questions. How exactly did their ‘religion of love’ allow itself to be distorted in such a way, and not once, but numerous times? Protestants who try to blame it all on Catholic fanaticism are advised to read a book about the behaviour of Protestant colonists in Ireland or in North America. Similarly, Marxists should ask themselves what it was about the teachings of Marx that paved the way to the Gulag, scientists should consider how the scientific project lent itself so easily to destabilising the global ecosystem, and geneticists in particular should take warning from the way the Nazis hijac

If you want to make people believe in imaginary entities such as gods and nations, you should make them sacrifice something valuable.