Leaving aside any solipsism, it’s fair to say that the outside world doesn’t really exist. not to you anyway.
think about it: everything you think you know about the world is a representation of the information processed by your nervous system and assembled into a coherent gestalt to be thrown up on the screen of your awareness.
What that means is, you don’t really know anything about other people. you know a lot of things about the inside of your own nervous system, and how it processes information.
the good news is, the most exhaltedly saintly, christlike and wonderful person you ever met or imagined, is really just an assemblage of qualities that you have already internalised. In effect, the qualities of such a person are really your qualities. You just map them onto the signals you may or may not be getting from the outside world.
The bad news is, the most fucked up, depraved evil bastard you ever met or imagined, is also just a collection of qualities that exist in your repertoire.
As far as your nervous system is concerned, other people don’t even exist. Just placeholders for a spectrum of feelings, emotions and perceptions that you’ve already learned to recognise. Those aren’t their emotions, those are your emotions.
It has always been you, all along.
Be nice. Merry Christmas.
If you haven’t all achieved enlightenment by the time I get back, heads will roll. This is your only warning.