As I watch I see the world pass me by. All the good, the bad, in the twinkle of an eye. I watch and wait, and patiently sit. I never began, so I shall never quit. My only presence is in my being. It is hardly noticed, and not worth a thing. I'm fast as light, thin as air. Run if you can. Run if you dare. To avoid me is the mark of a fool. For all you're worth, your life is my tool. Though concealed, I am not shy. The question is: What am I? Answer: I can see you're confused by my little rhyme. Don't fret, my friend. You have plenty of TIME!