Such questions as these I am going to try to answer in the simplest language possible. I would avoid long words altogether, if I could; but some of these long words mean certain definite things, and there are no other words to serve the purpose. You do not refuse to engage in the automobile business because the carburetor and the differential are words of four syllables. Neither should you refuse to get yourself straight with the universe because it is too much trouble to go to the dictionary and learn that the word "phenomenon" means something else than a little boy who can play the piano or do long division in his head. CONTENTS PART ONE: THE BOOK OF THE MIND PAGE CHAPTER I. THE NATURE OF LIFE 3 Attempts to show what we know about life; to set the bounds of real truth as distinguished from phrases and self-deception. CHAPTER II. THE NATURE OF FAITH 8 Attempts to show what we can prove by our reason, and what we know intuitively; what is implied in the process of thinking, and without which no thought could be. CHAPTER III. THE USE OF REASON 12 Attempts to show that in the field to which reason applies we are compelled to use it, and are justified in trusting it. CHAPTER IV. THE ORIGIN OF MORALITY 17 Compares the ways of Nature with human morality, and tries to show how the latter came to be. CHAPTER V. NATURE AND MAN 21 Attempts to show how man has taken control of Nature, and is carrying on her processes and improving upon them. CHAPTER VI. MAN THE REBEL 27 Shows the transition stage between instinct and reason, in which man finds himself, and how he can advance to a securer condition. CHAPTER VII. MAKING OUR MORALS 31 Attempts to show that human morality must change to fit human facts, and there can be no judge of it save human reason. CHAPTER VIII. THE VIRTUE OF MODERATION 37 Attempts to show that wise conduct is an adjustment of means to ends, and depends upon the understanding of a particular set of circumstances. CHAPTER IX. THE CHOOSING OF LIFE 42 Discusses the standards by which we may judge what is best in life, and decide what we wish to make of it. CHAPTER X. MYSELF AND MY NEIGHBOR 50 Compares the new morality with the old, and discusses the relative importance of our various duties. CHAPTER XI. THE MIND AND THE BODY 53 Discusses the interaction between physical and mental things, and the possibility of freedom in a world of fixed causes. CHAPTER XII. THE MIND OF THE BODY 61