"Why is there space rather than no space? Why is space three-dimensional? Why is space big? We have a..." — Leonard Susskind

The success of ordinary cosmology speaks against the idea that the universe was created in a random fluctuation.

Space can vibrate, space can fluctuate, space can be quantum mechanical, but what the devil is it? And, you know, everybody has their own idea about what it is, but there's no coherent final consensus on why there is space.

Unforeseen surprises are the rule in science, not the exception. Remember: Stuff happens.

I have a funny mental framework when I do physics. I create an imaginary audience in my head to explain things to - it is part of the way I think. For me, teaching and explaining, even to my imaginary audience, is part of the process.