Oh, about knowing everything, I do believe we carry the truth within ourselves but we are misguided by our thoughts, emotion and desires. Sometimes when I clear my mind of all thoughts and desires, I do find important meanings within myself. Some people call it "message from the universe", I call it "communication with my consciousness" or smtn like that.
In other words - we are the truth, covered by illusions. Knowing ourselves equals knowing the truth. They say it's the first step to enlightenment.
Then we ask: what is enlightenment? xD