Wang Lu remembered that he had seen an interesting question a long time ago.
How could one prove one's existence?
Because this question had a pre-existing question: you could not prove that anything actually exists, because it could be assumed that everything around you is an illusion, and that all your senses are manipulated by spells of a brilliant cultivator. Everything that you touch, see and hear, are all fabricated, all are nonexistent. Under such circumstances, you naturally could not prove that anything exists.
So, could one person prove that one exists?
Towards this problem, there was once a sage who said: I think, therefore I am. It meant that when I thought, the thought itself must exist, and it also must have a carrier, which was the person who thought. Therefore, the existence of my thought meant that I, as the carrier of that thought, must also exist. Thus, I think, therefore I am.
