What is the best business/inspirational book you have ever read

my two favorite books of all time are
Think and Grow Rich by N.Hill : This book not only talks about some of the most richest people in US history but it challenges you to open your mind to aquire wealth . It also proves the theory that it takes money to make worng.

and Rich Dad Poor Dad By Robert K. this book helps to open your eyes to another paradigm of how money should be spent and used to aquire wealth

So those are mind what are yours of all time