Do you exist?

After years of thinking I came the conclusion that the only thing I know is that I exist. I found a famous philosopher who said the same thing.

http://en.wikipedia.org/wiki/Cogito_ergo_sum

"Cogito, ergo sum" Usually translated in English as: "I think, therefore I am", is a philosophical statement in Latin used by René Descartes, which became a foundational element of Western philosophy. The simple meaning of the phrase is that if someone is wondering whether or not he exists, that is in and of itself proof that he does exist (because, at the very least, there is an "I" who is doing the thinking).

Do you understand the depth of this statement? If you aren’t then you can be thinking, perceiving or believing that you are. The very fact that you think you are proves that you are.

Other philosophers take it a step further and say, you don’t need to think in order to be. You either are or aren’t. Thinking is a capability you have once you exist.

Do you know that I exist? Obviously not; you may assume that I exist since I have similar traits to you.

I know I exist but I’m not sure if any of you readers exist. The only reason I’m writing this blog is because I assume you exists since you appear to be similar to me.