In this astonishing and profound work, an irreverent sleuth traces the riddleof existence from the ancient world to modern times.

From Jim Holt, the New York Times bestselling author of Why Does the World Exist?, comes an entertaining and accessible guide to the most profound scientific and mathematical ideas of recent centuries in When Einstein Walked with Gödel: Excursions to the Edge of Thought. Does time exist? What is infinity? Why do mirrors reverse left and right but not up and down? In this scintillating collection, Holt explores the human mind, the cosmos, and the thinkers who’ve tried to encompass the latter with the former. With his trademark clarity and humor, Holt probes the mysteries of quantum mechanics, the quest for the foundations of mathematics, and the nature of logic and truth. Along the way, he offers intimate biographical sketches of celebrated and neglected thinkers, from the physicist Emmy Noether to the computing pioneer Alan Turing and the discoverer of fractals, Benoit Mandelbrot. Holt offers a painless and playful introduction to many of our most beautiful but least understood ideas, from Einsteinian relativity to string theory, and also invites us to consider why the greatest logician of the twentieth century believed the U.S. Constitution contained a terrible contradiction—and whether the universe truly has a future.

“Nathalia Holt presents a thorough account of the research that provides scientists with hope that a cure will one day be achievable... and her empathy shines through in her prose. This is as important a social history as it is a medical document.”—The Daily Beast Two patients—each known in medical history as the Berlin Patient—were cured of the HIV virus. The two patients’ disparate cures came twelve years apart, but Nathalia Holt, an award-winning scientist at the forefront of HIV research, connects the molecular dots of these cases for the first time. Scientists are known to maintain a professional distance from those they study, but sometimes scientists are not just investigators, they are caregivers, too. Cured illustrates that even in the era of high-tech and big pharma, the way doctors and patients communicate remains a critical ingredient in the advance of this science. Holt offers a kind of hope that the thirty-four million people currently infected with HIV need and a story of ingenuity, dedication, and humanity that will inspire the rest of us.