Charles Darwin was a compulsive note-taker and list-maker. As a bachelor, he compiled a one-page list of arguments for and against marriage and then, having made his decision, went out to find someone upon whom to exercise it. As a husband, he recorded every household expense and, despite being independently wealthy, made year-end resolutions for the smallest of savings. As a father, he made notes on how his children cried and when they blushed. As a man often ill -- or, perhaps, hypochondriac -- he tracked and tallied his woes: each headache or bout of flatulence was noted, each morning and evening was ranked, each month proclaimed him feeling well or poorly. ... FULL STORY »