A bit cliché but:

What are we?

I don’t mean what is the meaning of life, or what are humans, but what is this universe? We have a theory of what it was before the big bang and much has been explained about the universe around us, but there is still plenty of unexplained and unexplored stuff. What brought the existence of all the condensed matter pre big bang in to existence? I don’t know the right question to ask because it’s unfathomable, but I’d just like to know what this existence is. Is this it? Are we one of many alternatives? Are we a thought?

It’s my favourite headfuck.