CHAPTER 21.――LOGIC AND LIFE. 1. Logic Given a Place in a Secondary Course. 2. Man’s Supremacy Due to Power of Thought. 3. Importance of Progressive Thinking. 4. Necessity of Right Thinking. 5. Indifferent and Careless Thought. 6. The Rationalization of the World of Chance. 7. The Rationalization of Business and Political Sophistries. 8. The Rationalization of the Spirit of Progress. 9. A Rationalization of the Attitude Toward Work. 10. The Logic of Success. 11. Outline. 12. Summary. 13. Review Questions. 14. Questions for Original Thought and Investigation. GENERAL EXERCISES IN TESTING CATEGORICAL ARGUMENTS. GENERAL EXERCISES IN TESTING HYPOTHETICAL, DISJUNCTIVE AND DILEMMATIC ARGUMENTS. EXAMINATION QUESTIONS FOR TRAINING SCHOOLS AND COLLEGES. BIBLIOGRAPHY. OUTLINE OF BRIEFER COURSE. INDEX. CHAPTER 1. THE SCOPE AND NATURE OF LOGIC. =1. THE MIND.= As to the true conception of matter the world is ignorant. Yet when asked, “What does matter do?” the reply is, “Matter moves, matter vibrates.” Moreover, relative to the exact nature of mind, the world is likewise ignorant. But to the question, “What does mind do?” the response comes, “The Mind _knows_, the mind _feels_, the mind _wills_.” The mind has ever manifested itself in these three ways. Because of this three-fold function it is easy to think of the mind as being separated into distinct compartments, each constituting an independent activity. This is erroneous. The mind is a living unit having three sides but never acting one side at a time. When the mind knows it also feels in some way and wills to some extent. To illustrate: Music is heard and one _knows_ it to be Rubinstein’s Melody in F. The execution being good one _feels_ pleasure. That the pleasurable state may be augmented one _wills_ a listening attitude. For analytical purposes the psychologists have a way of naming the state of mind from the predominating manifestation. =2. LOGIC RELATED TO OTHER SUBJECTS.= What the mind _is_ may in time be answered satisfactorily by philosophy; what the mind _does_ is described by psychology; what the mind _knows_ is treated by logic. Again: the mind as a whole furnishes the subject matter for psychology, whereas logic is concerned with the mind knowing, aesthetics with the mind feeling, and ethics with the mind willing. Ethics attempts to answer the question, “What is right?” aesthetics, “What is beautiful?” and logic, “What is true?”