– H.P. Blavatsky ‘Letter to the Fifth Annual Convention of the American Section of the Theosophical Society’, 1891
In 1875 H.P. Blavatsky joined a new phase in the development of humanity by making an enormous effort to present the Ageless Wisdom or Theo-Sophia under the name Theosophy, for the humanity of today and for the future generations. She tried to put it in more understandable words and free from dogmatism. It was a kind of Renaissance, a next re-embodiment of the Theo-Sophia in the western world, as happened many times in the past.
From 1875 until 1891, when H.P.B. died, she worked continually, based on instructions from her Teachers and with the help of many co-workers, to explain the Theo-Sophia to “the orphan humanity”, highlighting the publications of the sublime works The Secret Doctrine and The Voice of Silence.
If we ask what are the fundamental conceptions of that Theosophy, we prefer to let Blavatsky speak for herself in the Proem of The Secret Doctrine, vol I page 13 where she refers to the 3 + 3 propositions she says:
Before the reader proceeds to the consideration of the Stanzas from the Book of Dzyan which form the basis of the present work, it is absolutely necessary that he should be made acquainted with the few fundamental conceptions which underlie and pervade the entire system of thought to which his attention is invited. These basic ideas are few in number, and on their clear apprehension depends the understanding of all that follows; therefore no apology is required for asking the reader to make himself familiar with them first, before entering on the perusal of the work itself.
The Secret Doctrine establishes three propositions in Vol I plus another three in volume II.
Taking this as a starting point means that whatever conclusions we draw from the theosophical teachings, they can never conflict with these 3+3 propositions. They will always have to reflect these “touchstones”.