Aeon418
If that makes sense to you, you might also appreciate why Crowley 'appears' to go off on a tangent in his closing remarks on the Sun card in The Book of Thoth (p.114-115).I find the Emperor card a little intimidating, so this is lovely imagery to work with. I also heard a good suggestion on the LivingThelema podcasts for meditating with the growing, regenerative nature of the universe, to help with integrating aspects.
Caveman ancestry, civilization, and psycho-pathology? Where's he going with all this? In actual fact he's commenting on the need for wholeness and integration within the human psyche, and the problems that modernity has inflicted on those aspects ourselves that are still living in a prehistoric cave. Hence the emergence of various psychotherapies to try and help deal with this issue. The Emperor on the Path of Tzaddi relates to many of the same issues, but from a slightly different angle.