"The Masters are what they are; what they have written — they have written, and neither they nor their doctrines need the acclamation or apology of lesser minds. It is almost impossible to arrive at the facts, or even to form a trustworthy opinion upon a subject so far reaching, by studying an edited book of extracts. Therefore, that the members of the Theosophical Society and the world at large, should be enabled to study the truth for themselves concerning The Masters and their doctrines as set forth in these letters signed by their own hands, has been the aim of the compiler. To this end, the whole of the Mahatma Letters left by Mr. Sinnett have been transcribed verbatim from the originals and without omission."
January 1, 1970
https://en.wikiquote.org/wiki/The_Mahatma_Letters_to_A._P._Sinnett