It is often asked which revision of Science and Health is the best. The arrangement of my last revision, in 1890, makes the subject-matter clearer than any previous edition, and it is therefore better adapted to spiritualize thought and elucidate scientific healing and teaching. It has already been proven that this volume is accomplishing the divine purpose to a remarkable degree. The wise Christian Scientist will commend students and patients to the teachings of this book, and the healing efficacy thereof, rather than try to centre their interest on himself. Students whom I have taught are seldom benefited by the teachings of other students, for scientific foundations are already laid in their minds which ought not to be tampered with. Also, they are prepared to receive the infinite instructions afforded by the Bible and my books, which mislead no one and are their best guides. The student may mistake in his conception of Truth, and this error, in an honest heart, is sure to be corrected. But if he misinterprets the text to his pupils, and communicates, even unintentionally, his misconception of Truth, thereafter he will find it more difficult to rekindle his own light or to enlighten them. Hence, as a rule, the student should explain only Recapitulation, the chapter for the class-room, and leave Science and Health to God's daily interpretation. Christian Scientists should take their textbook into the schoolroom the same as other teachers; they should ask questions from it, and be answered according to it,--occasionally reading aloud from the book to corroborate what they teach. It is also highly important that their pupils study each lesson before the recitation. That these essential points are ever omitted, is anomalous, when we consider the necessity of thoroughly understanding Science, and the present liability of deviating from absolute Christian Science. Centuries will intervene before the statement of the inexhaustible topics of Science and Health is sufficiently understood to be fully demonstrated. The teacher himself should continue to study this textbook, and to spiritualize his own thoughts and human life from this open fount of Truth and Love. He who sees clearly and enlightens other minds most readily, keeps his own lamp trimmed and burning. Throughout his entire explanations he strictly adheres to the teachings in the chapter on Recapitulation. When closing the class, each member should own a copy of Science and Health, and continue to study and assimilate this inexhaustible subject--Christian Science. The opinions of men cannot be substituted for God's revelation. In times past, arrogant pride, in attempting to steady the ark of Truth, obscured even the power and glory of the Scriptures,--to which Science and Health is the Key.