Both of these guys are in the Speaker Hall of Fame. Both have written many highly popular books. Both are internationally renowned for their dramatic impact on audiences ranging from scientists to sales professionals.

But they are as different as night from day, ying from yang, ping from pong. One is known as "The Pitbull of Personal Development" and thinks "truth" is shaped like a 2x4. The other is known for an uncanny ability to blend depth of insight with inspiration. One "hasn't got time for tact," while the other will take all the time needed to help someone understand.

People who know them wonder how on earth they managed to collaborate on anything. But read their answers to 50 of life's greatest questions and you will see for yourself the explosive wisdom of bringing these two together. Powerful. Provocative. Personal.

You will undoubtedly love one and resent the other...but either way you'll get the truth!