Warren Buffett recommended this book to me back in 1991, and it’s still the best business book I’ve ever read. Even though Brooks wrote more than four decades ago, he offers sharp insights into timeless fundamentals of business, like the challenge of building a large organization, hiring people with the right skills, and listening to customers’ feedback. (Here’s a free download of one of my favorite chapters, “Xerox Xerox Xerox Xerox.”)