You could always google "siblings and Autism". I honestly wish their would of been some stuff for my younger brother when he was a kid. The one book I will recommend is "All Cats have Asperger's Syndrome" b/c it is a great book for explaining autism in a simple manner to pretty much anyone.
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Balance is needed within the universe, can be demonstrated in most/all concepts/things. Black/White, Good/Evil, etc.
All dependent upon your own perspective in your own form of existence, so trust your own gut and live the way YOU want/need to.