They are focused on whether they can do something. They never think whether they should do something.

Readers probably haven't heard much about it yet, but they will. Quantum technology turns ordinary reality upside down.

The purpose of history is to explain the present - to say why the world around us is the way it is. History tells us what is important in our world, and how it came to be. It tells us what is to be ignored, or discarded. That is true power - profound power. The power to define a whole society.

Sometimes I look around my living room, and the most real thing in the room is the television. It's bright and vivid, and the rest of my life looks drab. So I turn the damn thing off. That does it every time. Get my life back.

They believed that prediction was just a function of keeping track of things. If you knew enough, you could predict anything. That's been cherished scientific belief since Newton.' And?' Chaos theory throws it right out the window.

Exercise invigorates the body and sharpens the mind.

Conventional wisdom is invariably out of date. Because in the time it has taken to become conventional - to become what everyone believes - the world has moved on. Conventional wisdom is a remnant of the past.