"One of the most important types of love - the love between siblings - has perhaps also been the least-carefully explored in contemporary literature. Count Brittany Ackerman's instantly engaging and wildly engrossing memoir, The Perpetual Motion Machine, as a headfirst dive in the right direction. Her prose is accessible and affecting, and her family story is exquisite in its luminous detail and intimacy, full of heartbreak and humor - as simple as an abacus, as expansive as the starry night sky. I loved this book!" -Davy Rothbart, author of My Heart is an Idiot and creator of FOUND Magazine, and contributor to This American Life