Life is too short for long-term grudges.

Physics is a good framework for thinking. ... Boil things down to their fundamental truths and reason up from there.

If you had to buy a new plane every time you flew somewhere, it would be incredibly expensive.

The first step is to establish that something is possible; then probability will occur.

Weighing too much on someone's talent and not someone's personality. I think it matters whether someone has a good heart.

The rumours of the demise of the U.S. manufacturing industry are greatly exaggerated.

America is the spirit of human exploration distilled.