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

Your job as a scientist is to figure out how you're fooling yourself.

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

From our point of view, the most exciting thing would be if we discovered something really fundamental in our understanding was just off a bit - and that now we have a chance to revisit it

So it's possible that someday, by understanding a little bit more about how the world works, it will come back to help us in some other way that will be surprising

Astronomers ought to be able to ask fundamental questions without accelerators

I was one of those kids who always thought that we should know how the world works around us

Nobody really expects a Nobel Prize call

Probably the single most important thing about the Nobel Prize for most people is whether they get the coveted parking space on campus.

It is a tough choice between ending up in the cold or ending up in a fiery blast.

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

His father was self-made, but his mother was constructed by others, and such edifices are notoriously fragile.

Though we cannot by our prayers give God any information yet we must by our prayers give him honor.

Any honest conversation about engaging young people must address discrimination against young people.

All the really successful, happy relationships that I know of, the people that are together are friends, anyways.

I spent a week there one afternoon.

Behind every word a whole world is hidden that must be imagined.

I've been a dad since I was nineteen, so I think a lot about fatherhood and the power of that sacrifice in your life.

The main trouble with despair is that it is self-fulfilling.

I'm always out looking for weird, beautiful things.

I would be content being a housewife if I could find the kind of man who wouldn't treat me like one.