You might expect gravity would slow it down, but it's just expanding faster and faster

You want your mind to be boggled. That is a pleasure in and of itself. And it's more a pleasure if it's boggled by something that you can then demonstrate is really, really true

We have a remarkably complete picture in many ways - and it could be that we're not accounting for something that's almost three-quarters of the entire universe

If you ask almost any of them, do you stand behind your theory, is this the answer, I think they would almost every one say that no, no, no, I'm just trying to expand the range of possibilities. We really don't know what is going on.

There are still so many questions to answer. When you look at any part of the universe, you have to feel humbled.

Nobody really expects a Nobel Prize call

It seemed like my favourite kind of job - a wonderful chance to ask something absolutely fundamental: the fate of the Universe and whether the Universe was infinite or not