In Nautilus, Mary Ellen Hannibal writes about Vladimir Nabokov's love of lepidoptery, or the study of butterflies: "Today we can trace the legacy of the writer and scientist in the motion and migration of the butterflies he studied. Nabokov once wrote that, had he not left Russia, he might have spent his life entirely on lepidoptery, and not fiction. So, at heart, was Nabokov a scientist or an artist? Asked that question once, he expressed puzzlement: 'There can be no science without fancy,' he replied, and 'no art without facts.' "