Great short and simple book. Read the messages which every HBS professor transmits to their students during the last day of class. From real life stories, to amazing metaphors, to inspirational messages, I am happy see a fellow grad had the initiative to put in writing some of those messages with which our professors leave us year in and year out. Inspirational messages don't get any simpler than this - you will truly spend a couple of hours of magnificent inspirational reading from some of the top thinkers in the business world.