Charles Koch recommended this book on his website.
Charles Koch mentions 'Why Wages Rise' in his book 'Good Profit'.
One of the four books that taught Charles Koch "how the world works.”
Joe Rogan: "I really can’t recommend this book enough. It’s one of the best and most insightful books I’ve ever read."
"Everything by Matt Ridley is worth reading." - Naval Ravikant
Charles Koch recommended 'Frames of Mind' on the 'Tim Ferriss Show' podcast.