Relativity

Roger Penrose is Emeritus Rouse Ball Professor of Mathematics at the University of Oxford. He has received numerous prizes and awards, most notably the Wolf Foundation Prize in physics, which he shared with Stephen Hawking. He is the author of three previous books, including The Emperor’s New Mind. He lives in Oxford, England.

Albert Einstein (1879–1955), one of the greatest thinkers of the twentieth century, was born in Ulm, Germany, to German-Jewish parents. He published his first great theories in Switzerland in the early 1900s while working as a patent clerk.