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.

I can't remember the last book that taught me so much, and so well, about what it means to be human.

The library will endure; it is the universe... We walk the corridors, searching the shelves and rearranging them, looking for lines of meaning amid leagues of cacophony and incoherence, reading the history of the past and of the future, collecting our thoughts and collecting the thoughts of others, and every so often glimpsing mirrors, in which we may recognize creatures of the information.

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.

It is not true that people who accomplish things don't waste time and that people who waste time don't accomplish things. The very concept is ill-informed. You can't waste time and you can't save time; you can only choose what you do at any given moment.

The quotation-business is booming. No subdivision of the culture seems too narrow to have a quotation book of its own.... It would be an understatement to say that these books lean on one another. To compare them is to stroll through a glorious jungle of incestuous mutual plagiarism.

Geniuses of certain kinds - mathematicians, chess players, computer programmers - seem, if not mad, at least lacking in the social skills most easily identified with sanity.