Initiation Human and Solar: Now Available!
This is one of the foremost works of all Theosophy- from the well known Alice Bailey, an initiatory work which describes the various levels of spiritual refinement which are required on the path to Theosophical mastery. It should be noted that some of the obtuse terminology is explained at the end of the text in a decently sized glossary.
I highly recommend this work for those who intend to delve into the occult; one need not be a Theosophist themselves to understand that the spiritual path requires a trial by fire of sorts- withstanding temptation, renunciation of certain vices (voluntarily, in most paths) and more. This particular work intriguingly suggests that to attain the higher levels of this mystery tradition requires vegetarianism and, for some, essentially veganism.
A fitting 250th edited work!