For a human being, nothing comes naturally,' said Grumman. 'We have to learn everything we do.

We don't need lists of rights and wrongs, tables of do's and don'ts: we need books, time, and silence. Thou shalt not is soon forgotten, but Once upon a time lasts forever.

I have stolen ideas from every book I have ever read.

Lonely? I don't know. They tell me this is cold. I don't know what cold is, because I don't freeze. So I don't know what lonely means either. Bears are made to be solitary.

We measure the value of a civilized society by the number of #‎ libraries it opens, not the number it closes down.

I'm superstitious about the paper that I use, for example. I've written all my novels on a paper of a particular size with lines of a particular distance apart and with two holes in the paper for the folder clip.

But think of Adam and Eve like an imaginary number, like the square root of minus one: you can never see any concrete proof that it exists, but if you include it in your equations, you can calculate all manner of things that couldn't be imagined without it.