You can't waste time and you can't save time; you can only choose what you do at any given moment.

When the Lilliputians first saw Gulliver's watch, that "wonderful kind of engine...a globe, half silver and half of some transparent metal," they identified it immediately as the god he worshiped. After all, "he seldom did anything without consulting it: he called it his oracle, and said it pointed out the time for every action in his life." To Jonathan Swift in 1726 that was worth a bit of satire. Modernity was under way. We're all Gullivers now. Or are we Yahoos?

The universe is computing its own destiny.

As a technology, the book is like a hammer. That is to say, it is perfect: a tool ideally suited to its task. Hammers can be tweaked and varied but will never go obsolete. Even when builders pound nails by the thousand with pneumatic nail guns, every household needs a hammer. Likewise, the bicycle is alive and well. It was invented in a world without automobiles, and for speed and range it was quickly surpassed by motorcycles and all kinds of powered scooters. But there is nothing quaint about bicycles. They outsell cars.

Children and scientists share an outlook on life. If I do this, what will happen? is both the motto of the child at play and the defining refrain of the physical scientist. ... The unfamiliar and the strange - these are the domain of all children and scientists.

Every new medium transforms the nature of human thought. In the long run, history is the story of information becoming aware of itself.

We say that time passes, time goes by, and time flows. Those are metaphors. We also think of time as a medium in which we exist.