Comment: Find the areas where they overlap

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Find the areas where they overlap

And learn about the basic principles upon which they were all constructed.

If you're really interested in this subject, look up Ken Wilber:

I'm not a big follower of "Integral Theory" per se, but this guy does a great job of showing what the foundational principles of spirituality are by showing all the things most religions have in common, and stripping away the dogma.

Don't get me wrong, I am not proselytizing. Ken Wilber is not my guru. But there was a time when I was struggling with these kids of questions myself, and his theories really helped me make sense of things.

edit: replaced link with a better option.