Yes, I cheated on this one too, I listened to someone else do the reading for me. The good news is, I still learned something. On audio, the book is about 8 hours long, and packed with knowledge.

The book was originally back in the 30's but has been updated several times since, either way, some of the language and discussions definitely seem a bit dated. That aside, the content is great, they seem to have put quite a bit of work into researching this text and it definitely shows.

The author is a phd and learned along-side some of the titans of industry, he had regular contact with Ford, Carnegie and Edison. These experiences as well as his massive amount of research led him to the principles of wealth and success and to define the key characteristics of someone who is wealthy.
I learned quite a bit along the way, and plan to re-read (errr. re-listen) to this one.