I sent a copy of Mr. Planemaker's Diving Machine to my closest friend from my undergraduate days. She wrote this in her Christmas card:
"As I was writing this, the postman knocked at the door; he was holding a book-shaped parcel ... When I opened the package, I was amazed! Not really, the cards are still waiting to be finished. I was immediately absorbed; how do you come up with such a variety of ideas? I have to concentrate over the computer details -- you clearly have an extensive knowledge -- and lots of other things, like how a limited company works. Again, I love the quotes you choose. Your reading must be very wide."
I'm still smiling!