Similar concept which I take no credit for, but enjoyed very much:
All humans are but one person living over and over, but with no memory of their past lives. Everything you’ve ever done, you did to yourself. You were Mother Teresa, you were Gandhi, you were Pol Pot. Every injustice perpetrated upon you was committed by yourself, and so was every kindness. One day the universe will end and you’ll re-integrate all your memories.
Similar concept which I take no credit for, but enjoyed very much: All humans are but one person living over and over, but with no memory of their past lives. Everything you’ve ever done, you did to yourself. You were Mother Teresa, you were Gandhi, you were Pol Pot. Every injustice perpetrated upon you was committed by yourself, and so was every kindness. One day the universe will end and you’ll re-integrate all your memories.
The Egg by Andy Weir.
That’s the one!