8. Albert Einstein - Relativity - The Special and General Theory (1916) - Translated by Robert W. Lawson (1920) - Penguin Classics (2006).pdf
After completing the final version of his general theory of relativity in November 1915, Albert Einstein wrote a book about relativity for a popular audience. His intention was "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." The book remains one of the most lucid explanations of the special and general theories ever written.