You seem to be summarizing Descartes' "Cogito Ergo Sum" - "I think therefore I am". It does indeed prove the existence of something, but it doesn't actually pro

You seem to be summarizing Descartes' "Cogito Ergo Sum" - "I think therefore I am". It does indeed prove the existence of something, but it doesn't actually prove anything about the nature of that existence. Are you an actual human being on a planet, the way it looks like, or are you a mind trapped in the Matrix? Does one thought cause the next, or are your thoughts just recordings on a tape of some sort, played sequentially, so the apparent causality is just an illusion? My point is, you really don't get very far before you need to believe in some axiom, e.g. "I am a sensing being whose subjective experience of reality resembles the objective reality around me" (I know this sounds very basic, but try listening to someone who thinks they can slow Earth's rotation by meditating, and you'll realize that not everybody starts with an axiom where subjective and objective reality are separate, or where subjective reality is a derivative of objective reality and not the other way around)