"'...the psychology of Freud and his successors...gave the first real notion of human semantics.'" (p. 188)
The successors must include Jung? There is the reference to semantics again. But "human semantics"? General semantics is clearly relevant and different from linguistic semantics.
"'Comparative historians like Spengler, Pareto, and Toynbee realized that history did not merely happen but had some kind of pattern.'" (ibid.)
James Blish's Okies future history is Spenglerian.
Poul Anderson's Technic Future History is Hordian.
Isaac Asimov's Robots and Foundation future history is Gibbonian.
Not much is known about Hord.