The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.

Carl Sagan spoke fluently between biology and geology and astrophysics and physics. If you move fluently across those boundaries, you realize that science is everywhere; science is not something you can step around or sweep under the rug.

I wanted to get a job being creative, and I did.

The worst sin toward our fellow creatures is not to hate them, but to be indifferent to them: that's the essence of inhumanity.

I'm going to retain a lot of Microsoft's stock.