While there are several very accessible editions (not to mention the facsimile version of the Original Edition) of The Key to Theosophy already available in print, what does this Theosophy Trust Books edition offer that the others do not?The Theosophy Trust edition provides a high degree of readability, including several useful improvements over other editions.First, we have inserted a new set of minor section headers that indicate what that particular section discusses. These minor section headings do not replace the original section headers that also appear as line items in the Table of Contents; they simply provide some convenient reference points for the reader, and do not disturb the listings in the original Table of Contents. Second, we have selected a larger format book to allow us to set the entire book in 10.5 point Palatino Linotype, an elegant and highly readable typeface, replacing the original 9 pt. font. Taken together, this Theosophy Trust edition is a beautifully crafted book with high readability that will reward the reader with an enjoyable reading experience and be a valuable addition to their library.As to the contents, H.P. Blavatsky notes that "The purpose of this book is exactly expressed in its title, "THE KEY TO THEOSOPHY," and needs but few words of explanation. It is not a complete or exhaustive text-book of Theosophy, but only a key to unlock the door that leads to the deeper study. It traces the broad outlines of the Wisdom Religion and explains its fundamental principles, meeting, at the same time, the various objections raised by the average Western Enquirer, and endeavouring to present unfamiliar concepts in a form as simple and in language as clear as possible. That it should succeed in making Theosophy intelligible without mental effort on the part of the reader would be too much to expect; but it is hoped that the obscurity still left is of the thought, not of the language, is due to depth, not to confusion. To the mentally lazy or obtuse, Theosophy must remain a riddle; for in the world mental as in the world spiritual, each man must progress by his own efforts. The writer cannot do the reader's thinking for him, nor would the latter be any the better off if such vicarious thought were possible. The need for such an exposition as the present has long been felt among those interested in Theosophy and its work, and it is hoped that it will supply information, as free as possible from technicalities, to many whose attention has been awakened, but who, as yet, are merely puzzled and not convinced."