The Nobel Prize-winning scientist's presentation of his landmark theory According to Einstein himself, this book is intended "to give an exact insight into the theory of Relativity to those readers who, from a general scientific and philosophical point of view, are interested in the theory, but who are not conversant with the mathematical apparatus of theoretical physics. " When he wrote the book in 1916, Einstein's name was scarcely known outside the physics institutes. Having just completed his masterpiece, "The General Theory of Relativity" -- which provided a brand-new theory of gravity and promised a new perspective on the cosmos as a whole -- he set out at once to share his excitement with as wide a public as possible in this popular and accessible book.