Instruct: Classify Amazon reviews into positive or negative sentiment
Query: marred by the updated material

I bought this version because I thought an update would be welcome considering the original book was written so long ago. I was wrong. The added material is weak and badly written. Just on a literary level, N.H.'s writing is strong, muscular, unequivocal. The updated material is like N.H. with a spark plug blown. It just doesn't have the same energy level or spiritual vibration. As far as the added content, that also is weak. The updater apparently does not know enough about his subjects to write truly compelling profiles of people such as Bill Gates, Martin Luther King, Jr., Roy Kroc, etc. In short: stick with the original. It is still remarkably powerful despite the passage of time.