Hmmm...
I believe repression and depressive apathy make it highly unlikely I will ever be able to discover and "own" everything inside myself. Further, I'm not at all certain uncovering everything would naturally lead to conquering all.
It is more likely I will have to be content with nurturing a personal psychic environment relatively unfriendly to my "demons" and relatively nurturing to my "angels."
All my opinions are subject to amendment...
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My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.