Following are some Alan Guth quotes which we have in our database of Quotes of Alan Guth.
Space is certainly something more complicated than the average person would probably realize. Space is not just an empty background in which things happen.
In the context of general relativity, space almost is a substance. It can bend and twist and stretch, and probably the best way to think about space is to just kind of imagine a big piece of rubber that you can pull and twist and bend.
Now, what space ultimately is - I should confess, I think most physicists believe - we don't yet know.