If your ego starts out, "I am important, I am big, I am special," you're in for some disappointments when you look around at what we've discovered about the universe. No, you're not big. No, you're not. You're small in time and in space. And you have this frail vessel called the human body that's limited on Earth.

Like a snowplow in overdrive, a supernova shockwave might sweep away any gas clouds in its path.

Follow the evidence wherever it leads, and question everything.

There is no true understanding of Biology without Chemistry. And there's no true understanding of Chemistry without Physics.

The iron from that meteorite and the iron from your blood have common origin in the core of a star.

If we're going to affect policy, or affect attitudes, for me, the adults have always been the target population.

The greatest of people in society carve niches that represent the unique expression of their combinations of talents. If everyone had the luxury of expressing the unique combination of talents in this world, our society would be transofrmed over night.