Well there are beliefs and then there is the Truth or whatever you want to call it that does the manifestation. Sorry but I disagree that a duality exists meaning there is good and bad that are of powers of themselves. There is a oneness and nothing happens except by that oneness. How we use that oneness determines good or bad.
All a person has to do to prove there is some power or supreme intelligence or something outside of ourselves at work in the universe is to put something in thought, speak it, give it affirmation and watch as something will happen relating to it. Granted if you affirm it is stupid superstition then you will get what you believe it to be.
Here is a video of an experiment that has been performed many times by many people and they had very similar results. Something outside of ourselves reacts to our thoughts, beliefs and or actions. Change is not by coincidence.
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http://www.wakingtimes.com/2018/01/1...ention-matter/