If you search the text of the book, e.g. with Google Books, you can see the four places where it appears and get a sense of the context and meaning. His talk of pyramids is similar to Eliezer's Void or Musashi's nameless virtue or God; seeing that connection should I think be enough to figure the rest out? Maybe? It's a pretty deep piece of wisdom though so a lot of the meaning might not be immediately obvious. Hence my trepidation about explaining it; it'd take too long.