Unlock the door to your fortune using the secrets revealed in this book. Based on Andrew Carnegie's famous formula for money-making, Master Key to Riches has been revised for the 21st century.As well as explaining the practical philosophy for success, in this inspiring book Napoleon Hill describes the key that will convert all your past failures into priceless assets and lead you to the attainment of the twelve great riches.Drawing on the experiences of hundreds of the world's most powerful and wealthy people, this book will show you how to succeed in any walk of life.