Food, like anything else, lives in the physical world and obeys the laws of physics. When you whisk together some oil and a little bit of lemon juice - or, in other words, make mayonnaise - you are using the principles of physics and chemistry. Understanding how those principles affect cooking lets you cook better.

We collectively have a special place in our heart for the manned space flight program - Apollo nostalgia is one element, but that is only part of it. American culture worships explorers - look at the fame of Lewis and Clark, for example. The American people want to think of themselves as supporting exploration.

Software is a gas; it expands to fill its container.

I have a very pragmatic approach to diets. Ones you can't stick to don't do you any good. Some people say, 'Just eat half of what's on your plate,' but I can't do that!

The depressing thing about battery technology is that it gets better, but it gets better slowly. There are a whole bunch of problems in materials science and chemistry that come in trying to make existing batteries better.

Economists want their discipline to be a science, and they have nailed down a few precepts, but many of their debates are still clouded by ideology.

The techniques of being an Internet visionary are just like those of lower-tech fortunetellers through the ages. A technological visionary must tell people what they want to hear, because your company's stock won't rise if you spout an unpopular vision to analysts.