“When talking about morality we value differences of opinion in a way that we don’t in any other area of our lives… Whenever we are talking about facts certain opinions must be excluded. That is what it is to have a domain of expertise. That is what it is for knowledge to count. How have we convinced ourselves that in the moral sphere there is no such thing as moral expertise, or moral talent, or moral genius even? How have we convinced ourselves that every opinion has to count? How have we convinced ourselves that every culture has a point of view on these subjects worth considering? Does the Taliban have a point of view on physics that is worth considering? No. How is their ignorance any less obvious on the subject of human well-being?” — Sam Harris

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