Psychologists call it "defocused attention," where you broaden your horizons, let your mind float and drift a bit. Coffee keeps us sharp and alert. It's great if you're driving at 3 o'clock in the morning. It's not so great if you're trying to come up with the next violin concerto.

So the greatest source of happiness is other people- and what does money do? It isolates us from other people. It enables us to build walls, literal and figurative, around ourselves. We move from a teeming college dorm to an apartment to a house, and if we're really wealthy, to an estate. We think we're moving up, but really we're walling off ourselves.

I think we should have more coffeehouses, more cafes, more "third places." More places where people can get together that's not work, not home, and where they can interact with people who are different from them.

We are shaped not only by our current geography but by our ancestral one as well. Americans, for instance, retain a frontier spirit even though the only frontier that remains is that vast open space between the SUV and strip mall. We are our past.

What is the ideal audio atmosphere for creativity and it turns out it is not complete silence, and it is not a very loud atmosphere, it's something about 70 decibels.

A confused mind is one that is open to the possibility of change.

The creative act always requires a stepping back. It's called the incubation period. The incubation period - one of the four phases of creativity - is when you're not consciously thinking of a problem, and you're letting it marinate. So this is why you hear time and again, people saying they had that "Eureka" moment in the bath, like Archimedes, or in the shower, or while going for a walk or in a coffeehouse.