At every point in life, you feel you know it all. It's actually not a wrong feeling because even the wisest man that ever lived (King Solomon) said "there is a time for every thing". Today, you feel you are at the peak but tomorrow you get to understand that your yesterday was just a preamble. This is what makes life fun. Life can't be exhausted. When I know all i need to know, i stop living. You just have to open up yourself to explore and learn new things everyday. I might know much today, but it can never be compared to what i am yet to know.
You Can't Know it all.