“Not until the beginning of the 20th century did Europe's urban populations finally become self-sustaining: before then, constant immigration of healthy peasants from the countryside was necessary to make up for the constant deaths of city dwellers from crowd diseases.”

“As healthy and viable populations of wild animals, wolves were gone from most of eastern North America long before the death of the last animals.”

“The end of Egypt's isolation turned what had been only occasional and incidental contact with the rest of the Near East into a constant and significant exchange of goods and ideas. The new cosmopolitanism introduced new forms and motifs and a growing naturalism to art. Egypt had always been receptive to immigrants, who had easily been assimilated into its culture; now even the pharaohs could marry foreigners. In addition, the increase of commerce and the emergence of a cosmopolitan urban population -- at Thebes and other cities -- marked the first real urbanization in Egyptian society.”

“Everything is becoming science fiction. From the margins of an almost invisible literature has sprung the intact reality of the 20th century. ”

“I am lithe, but fragile from constant involuntary self-analysis.”

“Humans are born with a susceptibility to that most persistent and debilitating disease of intellect: self-deception. The best of all possible worlds and the worst get their dramatic coloration from it. As nearly as we can determine, there is no natural immunity. Constant alertness is required.”