This little book contains a message for you-you, who are reading these lines. Think of the book what you will, at first-nevertheless, it will leave its message imprinted upon your mind, and you will be unable to forget it. The reading of it will form a distinct epoch in your life, little as you may realize it at this moment. You will be different, henceforth, by reason of the message contained herein. You may not accept all of its statements, but some of them will "stick" in your mind, as does the burr in the wool of the passing sheep...