Today, in this, the 21st century, bedtime doesn't matter at all. All that matters is what you set for your DVR.

I think that intelligence is such a narrow branch of the tree of life - this branch of primates we call humans. No other animal, by our definition, can be considered intelligent. So intelligence can't be all that important for survival, because there are so many animals that don't have what we call intelligence, and they're surviving just fine.

I believe that the manned space program can engage the public by advancing the space frontier. Every next mission takes you farther out in space than you were before, either technologically or in terms of distance.

We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically.

Pretending to know everything closes the door to finding out what's really there.

There are as many atoms in each molecule of your DNA as there are stars in the typical galaxy. This is true for dogs, and bears, and every living thing. We are, each of us, a little universe.

Some of the greatest poetry is revealing to the reader the beauty in something that was so simple you had taken it for granted.