This is a second short extract from "CS Lewis and James Blish" (here) with a cover illustration of Flandry and Aycharaych added.
briefly to Anderson’s Technic History, whose religious themes we have
by no means exhausted, red-blind beings, unable to see the light of a
proto-sun from within a nearby nebula, regard the, to them, entirely
dark nebula as the Sky Cave and the Gate of the Dead.
manipulates this race’s leaders by meeting them on a nebular
proto-planet. While exploiting other races’ religions, Aycharaych
himself sees meaning in mystery and death as a completion. He pities
God, the immortal and omniscient. (The Chereionites, who were also the
Ancients, were not necessarily theistic. Aycharaych, the last
Chereionite, might speak figuratively either because he works for
Merseia or because, in the Sky Cave, he addresses the terrestrial,
Flandry. As a telepath, he knows how to influence his opponents.)