Speculation and the exploration of ideas beyond what we know with certainty are what lead to progress.

Creativity is essential to particle physics, cosmology, and to mathematics, and to other fields of science, just as it is to its more widely acknowledged beneficiaries - the arts and humanities.

It's hubris to think that the way we see things is everything there is.

Basically, I wasn't properly socialized, so it made sense to do physics.

When it comes to the world around us, is there any choice but to explore?

One of the nice things about math and science is it’s obvious, you get the answer or you don’t get the answer.

Sometimes models are surprisingly smart.

Travel at faster than the speed of light certainly can have dramatic implications that are difficult to understand, such as time travel.

I did not set out to explain the extinction of the dinosaurs. I'm a particle physicist, and I was actually thinking about dark matter along with some collaborators.

Science is a combination of theory and experiment and the two together are how you make progress.

All the normal matter in the Milky Way disc is denser than the dark matter that surrounds it.

And so I pray I am today as honestwith myself, with life all around me and below and above me, with all who I encounter.

Words belong to those who use them only till someone else steals them back.

He kissed her forehead and drifted into an uneasy sleep, listening to the soft snoring of the creature on his chest, one he loved slightly more than he had come to fear.

We wrote verses that condemned us, with no hope of pardon, to the most bitter solitude.

A man with wife and daughters has no place losing his temper.

It's strange to think that culture is simply a matter of millions of files flying around, but we now think in terms of networks for everything.

The conquering of self is truly greater than were one to conquer many worlds.

There are new eras in one's life that are equivalent to youth-are something better than youth.

If human beings could be propagated by cutting, like apple trees, aristocracy would be biologically sound.

Anger is an emotion preeminently serviceable for the display of power.