" I wouldn’t trade the twenty-first century for any other. We have toilet paper and pasteurization and Novocain and Mexican avocados all winter long. And plenty of mysteries remain: what causes premature labor, or what exactly the universe is made of. The biology of deep oceans, the nature of gravity, the reason we sleep, the mechanisms of migration; thousands of questions still await answers. "

― Anthony Doerr , Four Seasons in Rome: On Twins, Insomnia, and the Biggest Funeral in the History of the World