The problem, often not discovered until late in life, is that when you look for things like love, meaning, motivation, it implies they are sitting behind a tree or under a rock. The most successful people recognize, that in life they create their own love, they manufacture their own meaning, they generate their own motivation. For me, I am driven by two main philosophies, know more today about the world than I knew yesterday. And along the way, lessen the suffering of others. You'd be surprised how far that gets you.

In the end, it's the people who are curious who change the world.

To believe in a universe as young as 6 or 7,000 years old is to extinguish the light from most of the galaxy.

While we may lose track of certain goals intermittently throughout the decades, I think we as a nation can be nimble when we need to be. All the buzz today is on the need for science literacy. That is on the agenda in ways it hasn't been in previous decades.

Since life on Earth is, so far, the only known example of life in the universe, our dilemma may simply be that we have no other examples to compare us with. If we did, then the life/non-life transition might look downright simple to us.

The press still thinks [global warming] is controversial. So they find the 1% of the scientists and put them up as if they're 50% of the research results. You in the public would have no idea that this is basically a done deal and that we're on to other problems, because the journalists are trying to give it a 50/50 story. It's not a 50/50 story. It's not. Period.

Need a distraction today? Not only does 12 + 1 = 11 + 2, but the letters "twelve plus one" rearrange to give you "eleven plus two."