Politics is for the present, while our equations are for eternity.

Leonardo da Vinci did not take received wisdom - whether from ancient classical thinkers or medieval scholars or from the Bible - without questioning it. And this was the beginning of the scientific method. This is another lesson for our time: that when we have evidence that contradicts a certain belief, we should be willing to change it. I think this made Leonardo, in some ways, a person who better understood the beauty of God's creation than a person who just takes all received wisdom from the Bible on faith.

The people who invented the twenty-first century were pot-smoking, sandal-wearing hippies from the West Coast like Steve, because they saw differently,” he said. "The hierarchical systems of the East Coast, England, Germany, and Japan do not encourage this different thinking. The sixties produced an anarchic mind-set that is great for imagining a world not yet in existence.

One of the strongest motives that leads men to art and science is escape from everyday life with its painful crudity and hopeless dreariness. Such men make this cosmos and its construction the pivot of their emotional life, in order to find the peace and security which they cannot find in the narrow whirlpool of personal experience.

Jobs has within him sort of this conflict, but he doesn't quite see it as a conflict between being hippie-ish and anti-materialistic but wanting to sell things like Wozniak's board. Wanting to create a business.

People who know what they’re talking about don’t need PowerPoint.

The older I get, the more I see how much motivations matter. The Zune was crappy because the people at Microsoft don’t really love music or art the way we do. We won because we personally love music.