Whatever you (physically or mentally) encircle, it is part of the universe, not the universe.

If you claim that what you have encircled is the whole universe, I will ask,

“How can you know?” 

If you define the word “universe” as “everything“, how can you know that there are no other parts unknown to you?

— Me@2014-07-27 02:50:20 PM

2014.07.27 Sunday (c) All rights reserved by ACHK