“Of course there had been plenty of diseases, long before humans had been around. But humans had definitely created Pestilence. They had a genius for crowding together, for poking around in jungles, for setting the midden so handily next to the well. Pestilence was, therefore, partly human, with all that this entailed. He was frightened.”
- Terry Pratchett, Thief of Time. 2001 (via coyotetale)