The Heart Of The Tao Book PDF Download. You will declare war with yourself!! These were the words I first heard when I enquired into the question, "What is the Path?". This book contains everything that I know now about the so-called 'Path' and indeed, in order to learn what I now know, I declared war within myself. Do not think that such a thing is trivial, simply as something mentioned in passing. War within the self is the cause of all war upon the planet and every nation that has ever stood upon it. Everything that drives us, inspires us, depresses us and stresses us is the result of a war within the self.