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too long to explain one posting but here it is.... all the Cosmic Principles are proven by science. http://www.earthcustodians.net/blog/2017/10/16/the-mind-and-quest-for-truth-the-7-immutable-principles/

For me the most important law is; Do no harm.

Or more specific; Do not harm someone that has done no harm.
Self Defense, or the defense of others who are attacked by an aggressor is of course O.k.

This may explain it.