"Within any city or state or civilization... the natural operation of time was to produce internal corruption; the ordinary expected routine thing was a process of decadence. This could even be observed in a parallel manner in the physical world, where bodies would decompose and the finest fabrics in nature would suffer putrefaction. In fact, the current science chimed in with the current view of nature, for in both these realms it was held that compound bodies had a natural tendency to disintegrate. ... The reassertion of these ancient ideas on the subject of the historical process helps to explain why at the Renaissance it was almost less possible to believe in what we call progress than it was in the middle ages. If anything it was more easy to believe of something of this sort in the realm of spiritual matters than in any other sphere—to believe in stages of time succeeding one another in an ascending series... and so to find meaning and purpose in the passage of time itself."