"Show me a heat map of passages — ‘hottest’ to ‘coldest’. Which chapters in this Obama biography should I absolutely not miss?"

"It’s voyeuristic, inspiring and gives us insight into both the text and the person who read the text."

"Do you know those stories of someone digging through the libraries of Mark Twain[10], David Foster Wallace[11] or Paul Rand[12] and finding their marked books?"

"Let Stefan Sagmeister publicly share the passages he’s highlighted in the new Murakami Haruki novel. This is something I want to see. And I bet you do, too."

"When I’m done reading and marking a book, I should be able to create my own abridged copy. Show me just my highlights with notes. Let me export this edition. Let me email it to myself. Or, if you dare, automatically typeset it and let me order a POD copy for my personal library."