If you can only know for sure that you are you, how do you know that the other people and things in your life isn't just an illusion? Better yet, do you really know that you are who you think you are?
Is your dreams the reality or is the so-called "reality" a dream?
The universe is so big, we couldn't be any smaller! All things have a science behind them. And, if you think about it, it's really just crazy.
Imagine if there's another universe- Where things are remarkably different from the universe we are living in. Is there humans? Is it three dimensional? Do they have language or stories? Do they have minds of their own? Are they even organisms?
If the universe is what it was 13 billion years ago, how would it be right this moment? Is it even bigger?
Are past lives true? Are they the surreal yet lifelike places and people you dream about?