This book is written with the fundamental intention and idea of pointing out a rational and workable method whereby the memory may be developed, trained and cultivated. Many persons seem to be under the impression that memories are bestowed by nature, in a fixed degree or possibilities, and that little more can be done for them--in short, that memories are born, not made. But the fallacy of any such idea is demonstrated by the investigations and experiments of all the leading authorities, as well as by the results obtained by persons who have developed and cultivated their own memories by individual effort without the assistance of an instructor. But all such improvement, to be real, must be along certain natural lines and in accordance with the well established laws of psychology, instead of along artificial lines and in defiance of psychological principles. Cultivation of the memory is a far different thing from "trick memory," or feats of mental legerdemain if the term is permissible. Kay says: "That the memory is capable of indefinite improvement, there can be no manner of doubt; but with regard to the means by which this improvement is to be effected mankind are still greatly in ignorance." Dr. Noah Porter says: "The natural as opposed to the artificial memory depends on the relations of sense and the relations of thought,--the spontaneous memory of the eye and the ear availing itself of the obvious conjunctions of objects which are furnished by space and time, and the rational memory of those higher combinations which the rational faculties superinduce upon those lower. The artificial memory proposes to substitute for the natural and necessary relations under which all objects must present and arrange themselves, an entirely new set of relations that are purely arbitrary and mechanical, which excite little or no other interest than that they are to aid us in remembering. It follows that if the mind tasks itself to the special effort of considering objects under these artificial relations, it will give less attention to those which have a direct and legitimate interest for itself." Granville says: "The defects of most methods which have been devised and employed for improving the memory, lies in the fact that while they serve to impress particular subjects on the mind, they do not render the memory, as a whole, ready or attentive." Fuller says: "Surely an art of memory may be made more destructive to natural memory than spectacles are to eyes." These opinions of the best authorities might be multiplied indefinitely--the consensus of the best opinion is decidedly against the artificial systems, and in favor of the natural ones.