It sometimes seems as if curbing entropy is our quixotic purpose in this universe.

When information is cheap, attention becomes expensive.

It is not the amount of knowledge that makes a brain. It is not even the distribution of knowledge. It is the interconnectedness.

Thinking about language, while thinking _in_ language, leads to puzzles and paradoxes.

For [Richard] Feynman, the essence of the scientific imagination was a powerful and almost painful rule. What scientists create must match reality. It must match what is already known. Scientific creativity is imagination in a straitjacket.

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.

The history of life is written in terms of negative entropy.