SINCE its publication in November 1988, H. P. Blavatsky's masterwork The Secret Doctrine has been a primary source book of ancient and modern theosophy. Tracing the unifying thread running through mankind's spiritual and intellectual heritage, it is one of the great seminal writings of all time. This massive study of man, of nature, of spiritual evolution, of the essence of reality is an astonishing document. And it is not as widely known as it ought to be. The Secret Doctrine is at once a fountain of metaphysics and a science of mythology. Blavatsky synthesizes science and spirituality into an exhilarating journey of spiritual awareness. -- The Book Reader, May/June 1988 To those who would like to explore the essence of the SD, or who have had difficulty penetrating its two large volumes, An Invitation to THE SECRET DOCTRINE should prove welcome. Based on Blavatsky's study suggestions given to her personal students, it is a succinct and appealing statement of the SD's principal teachings in her own words. Included are the Bowen notes of HPB's comments, relevant pages from The Secret Doctrine, photographs of HPB's manuscript, a historical account of 'The Writing of The Secret Doctrine,' and a glossary of terms. Text from the SD is reproduced from the original 1988 edition. As theosophical classics often become lifelong companions, Theosophical University Press makes every effort to produce books that are readable, durable, and affordable. This book is printed on recycled, acid-free paper selected for color, opacity, and antiglare surface. Its signatures are Smyth-sewn and bound with 14-point Kivar for durability. Given reasonable care, this book will not split or fall apart, and will last a lifetime.