The title makes it sound like a book on manipulating people, but it’s merely an archaic headline. It’s about the author’s quest to understand people, his frustrations due to the lack of such an “instruction book”, and learning how to become a better person. We might call it psychology or sociology now, but Carnegie visited and wrote many scholars of his time trying to find such knowledge.
If there’s any book I’d say everyone should read, it’s How to Win Friends and Influence People. Neat thing about it is, as the author says himself, you don’t have to read and parse it front to back to benefit. Pick it up, flip to a random chapter, read. It pays to read over and over again, occasionally reminding ourselves of our common humanity by internalizing the things he learned.
One quick example; He learned to shut the fuck up and listen. He tells a story about a dinner party he and his wife attended. We get the impression the host was quite the talker, dominating the conversation. Mr. Carnegie sat and listened to the man, hardly speaking at all. At the end of the evening the host went on and on about what a fine orator and clear thinker Carnegie was!
And if it’s the quote you take issue with, I don’t know how to respond. That’s simply how people are, you and I both.