"宗教是对人类尊严的侮辱。不论有无宗教，好人会做好事，坏人会做坏事。但要让好人做坏事，那就需要宗教。"

Simplified Meaning:

The quote discusses the idea that people have the capacity to do both good and bad things, regardless of their religious beliefs. For example, you might know someone who helps others because they are kind and another person who harms others because they have bad intentions. The quote suggests that while normally good people do good things and bad people do bad things, sometimes otherwise good people can be convinced to do harmful things if their religion tells them it’s the right thing to do. An example from history can be the Crusades, where people believed they were doing noble acts by fighting for their faith, but in reality, they caused a lot of suffering and violence. So, the quote is implying that while religion can inspire noble actions, it can also lead people to commit harmful acts that they would not otherwise consider. The advice here is to be mindful of how beliefs and teachings, religious or otherwise, might influence our actions in ways that are not always positive. This means thinking critically about the reasons behind our actions, and not just following something blindly.