On method, the amount of literature is even more imposing than that on the psychology of reasoning. Probably the most thorough book is Stanley Jevon’s _The Principles of Science_, though this, consisting of two volumes, will require quite some ambition to attack. A good recent short work is J. A. Thomson, _Introduction to Science_. Herbert Spencer’s short essay, _An Element in Method_, in his _Various Fragments_ might also be mentioned. Of those works treating method mainly from a corrective standpoint, I have already mentioned Jevon’s _Elementary Lessons in Logic_. _The_ authoritative and most comprehensive book on logic is still John Stuart Mill’s great tome. Of course this list of books on method, as well as that on the psychology of reasoning, cannot pretend to be more than merely suggestive. If the reader desires an extensive bibliography in either of these subjects he will probably find it in one of the books mentioned. On doubt and belief, William Clifford, _The Ethics of Belief_, and William James, _The Will to Believe_, might be read. The viewpoints of the two essays are in almost direct contradiction. On reading, Alexander Bain’s _The Art of Study_, in his _Practical Essays_, will be found useful. Bacon’s essay _On Studies_, which is not more than a couple pages long, contains more concentrated wisdom on the subject than is to be found anywhere. On subjects most worth thinking about, the reader cannot do better than read Herbert Spencer’s essay _What Knowledge is of Most Worth?_ in his _Education_. As to books most worth reading, consult the lists of John Morley, Sir John Lubbock, and Frederic Harrison; Sonnenschein’s _Best Books_ (in two volumes); Baldwin’s _The Book Lover_; Dr. Eliot’s _Five Foot Shelf_ and Frank Parson’s _The World’s Best Books_, previously referred to. On the art of living—the art of planning time so as to have room for thinking, as well as valuable hints as to how that thinking is to be carried out—consult Arnold Bennett, _How to Live on Twenty-four Hours a Day_, and E. H. Griggs, _The Use of the Margin_ (both very, very small books). Finally, there is much useful material, as well as incalculable inspiration, to be obtained from the intellectual and literary biographies of great thinkers. Especially is this true of autobiography. Among others may be mentioned the autobiographies of John Stuart Mill and Herbert Spencer, and an autobiographical fragment by Charles Darwin. FOOTNOTES: [ 1] See Herbert Spencer, _Education_. [ 2] Pillsbury, _Essentials of Psychology_. [ 3] _Principles of Psychology_, Vol. II, p. 332. [ 4] See William A. Scott, _Money_. [ 5] _How We Think._ [ 6] _Autobiography_, Vol. I, p. 463. [ 7] _Autobiography._ [ 8] Hugh Elliot, _The Letters of John Stuart Mill_. [ 9] Essay, _Over-Legislation_. [10] _The Conduct of the Understanding._ [11] _The Will to Believe._ [12] _Autobiography._ [13] _Science and Education._ [14] T. Sharper Knowlson, _The Art of Thinking_.