" I was surprised and delighted to find a lot of letters from people in the early days would say, ‘I was terribly depressed and upset until I sat down and read your book. It’s really shown me the way up again.’ I wrote it to do this for myself, and it’s seemed to have the same effect on a lot of other people. I can’t explain it. Perhaps I’ve inadvertently written a self-help book. "

― Neil Gaiman , Don't Panic: The Official Hitchhiker's Guide to the Galaxy Companion