Obituaries are just like biographies, only shorter. They remind us that interesting, successful people rarely lead orderly, linear lives. I defy you to find a single obituary that begins, "Jane Doe won the Nobel Prize in large part because she was admitted to a prestigious, highly selective preschool. After that, everything just kind of fell into place." Instead, you will read about dead ends, lucky coincidences, quirky habits, excessive self-confidence (often interspersed with bursts of excessive self-doubt), and a lot of passion for something.

He was obsessed with obituaries. She'd never read them before, he couldn't believe it, to him it was like someone who'd never read the funnies...Michael always wanted to know what they died of- accidental gunshot wounds, overdose, cancer. 'Was it suicide?' That's what he really wanted to know.

I read obituaries every day to learn what sorts of lives are available to us, to see an entire life compressed into a few column inches, to fit the whole story in my eye at once.

I became interested in librarians while researching my first book, about obituaries. With the exception of a few showy eccentrics, like the former soldier in Hitler's army who had a sex change and took up professional whistling, the most engaging obit subjects were librarians. An obituary of a librarian could be about anything under the sun, a woman with a phenomenal memory, who recalled the books her aging patrons read as children—and was also, incidentally, the best sailor on her stretch of the Maine coast—or a man obsessed with maps, who helped automate the Library of Congress's map catalog and paved the way for wonders like Google Maps.