well, my 12 second research project on this author reveals that he is obscure, his books were published a long time ago (i.e, 1970's) and are on disparate subjects that seem to have not much connection.
Drawing from his long experience as a naturalist, the author responds to the unexpected and symbolic aspects of a wide spectrum of phenomena throughout the universe. Scrupulous scholarship and magical prose are brought to bear on such diverse topics as seeds, the hieroglyphs on shells, lost tombs, the goddess Circe, city dumps, and Neanderthal man.
Scrupulous? Magical? Even the title "Unexpected Universe" seems a bit naff, because it implies there were people hanging around before the universe came into being, with no idea that anything like 'a universe' might be about to happen. I mean, they weren't expecting it. Now, I wonder where they
Conclusion: it is entirely possible that you can't grasp anything he is saying, because he has nothing to say.
Suggestion: try another book/author. There are many to choose from.