This is but a form of association, but is very important. If you can arrange your bits of knowledge and fact into logical groups, you will always be master of your subject. By associating your knowledge with other knowledge along the same general lines, both by resemblances and by opposites, you will be able to find what you need just when you need it. Napoleon Bonaparte had a mind trained along these lines. He said that his memory was like a large case of small drawers and pigeon-holes, in which he filed his information according to its kind. In order to do this he used the methods mentioned in this book of comparing the new thing with the old ones, and then deciding into which group it naturally fitted. This is largely a matter of practice and knack, but it may be acquired by a little thought and care, aided by practice. And it will repay one well for the trouble in acquiring it. The following table will be found useful in classifying objects, ideas, facts, etc., so as to correlate and associate them with other facts of a like kind. The table is to be used in the line of questions addressed to oneself regarding the thing under consideration. It somewhat resembles the table of questions given in Chapter XVII, of this book, but has the advantage of brevity. Memorize this table and use it. You will be delighted at the results, after you have caught the knack of applying it. QUERY TABLE. _Ask yourself the following questions regarding the thing under consideration. It will draw out many bits of information and associated knowledge in your mind_: (1) WHAT? (2) WHENCE? (3) WHERE? (4) WHEN? (5) HOW? (6) WHY? (7) WHITHER? While the above Seven Queries are given you as a means of acquiring clear impressions and associations, they will also serve as a Magic Key to Knowledge, if you use them intelligently. If you can answer these questions regarding anything, you will know a great deal about that particular thing. And after you have answered them fully, there will be but little unexpressed knowledge regarding that thing left in your memory. Try them on some one thing--you cannot understand them otherwise, unless you have a very good imagination. * * * * * Transcriber's note: Obvious typographical errors and printer errors have been corrected without comment. Other than obvious errors, the spelling, grammar, and use of punctuation are preserved as they appear in the original publication. Inconsistencies in spelling which remain unchanged include: rutte/ ruttes and ruttee/ ruttees In addition to obvious errors, the following changes were made: 1. Page 15: changed "it" to "is" in the phrase, "... first thing to do is to find...." 2. Page 140: changed "it" to "is" in the phrase, "... is to visualize...."