Judge a belief-system by the kind of people it produces

To tell truth/falsehood of a belief-system, ideology, group, political movement or even a singular opinion, I look at what kind of people it produces. If I went into detail, it would be offensive to many, so I will replace actual belief-systems with “XYZ” etc. In my early twenties I was interested the teachings of group XYZ. I read books by XYZ. But when it came time to join XYZ, and I went to…

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