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

Physicists have yet to understand why the Higgs boson's mass is what it is.

Probably if you look like Tyra Banks, it probably is hard, even if you are really smart, for people to take - it surprises some.

When people try to use religion to address the natural world, science pushes back on it, and religion has to accommodate the results. Beliefs can be permanent, but beliefs can also be flexible. Personally, if I find out my belief is wrong, I change my mind. I think that's a good way to live.

When I was in school I liked math because all the problems had answers. Everything else seemed very subjective.

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

I'm not creating the universe. I'm creating a model of the universe, which may or may not be true.