What is the author's style in A Study of History by Arnold J. Toynbee?

A Study of History has been compared to a mighty river, meandering along its course and gathering strength from many tributary streams. It might also be thought of as a great cathedral, in which every stone, every stained-glass window, and every historical monument in the interior help to create the final edifice that reveals the grandeur of humanity's spiritual aspiration. In constructing this imposing edifice, not only does Toynbee seem to know almost everything about so many different civilizations, his style of exposition is equally eclectic. In addition to the facts and historical research that are the tools of the historian's profession, he makes frequent use of mythology and world literature.