(All of section D “Apuleius, ‘De Deo Socratis’” -- Eleven paragraphs beginning with "Aupleius, born in..." and ending with "...Nothing must go to waste." – being also the end of the chapter)
In this section Lewis talks about the “daemons” as “creatures” between angels and men and their place between Earth and the moon just below the aether, along with the concept of the Triad and the Principle of Plenitude. Lewis talks more about the various topics in this section later, but as I have mentioned before, these are the sorts of ideas that convince me that the Space Trilogy was in reality “modern day” medieval stories written in the guise of Science Fiction. It is almost as if the Space Trilogy were a novelization of The Discarded Image. It was particularly brought out in OSP (but of course the book is full of TDI references of all kinds) by the image of Space as not empty, but full and teaming with life and creatures. This is described perfectly at the end of this section where Lewis mentions the Principle of Plenitude – “The universe must be fully exploited. Nothing must go to waste”. This is exactly how Ransom feels as he is traveling in Weston’s ship from Earth to Malacandra.
Of course we read about the macrobes that pressed on Lewis (as a character in the book) as he walked to Ransom’s house at the beginning of Perelandra, and in THS in connection with the NICE. These are certainly examples of the “bad” daemons, but there are other “creatures” around or made reference to, too. There is the wild woman in Jane’s room who is not really evil or good, but just “wild” (Lewis will talk more about such things in a later chapter), and there is discussion of the Roman and Greek gods as reflections or earthly manifestations of the the planetary gods.
The idea of the Triad – that between any two things there is a third thing “connecting” them is used by Lewis in various ways, the most prominent in my mind is his discussion in The Abolition of Man of “Men without Chests” and the problems that are created by denying the “intermediary” between the heart and the mind.
--Stanley