Albert Einstein wrote this book in 1916, when he was hardly
known outside the physics institutes and shares here his
excitement after completing his masterpiece. The General Theory
of Relativity. The purpose of this book, as explained by the
author himself is 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. To describe the basic ideas and principles of his most
important theory of relativity. Einstein has used the minimum of
mathematical terms. The Theory of Relativity special and general
that led to a new theory of gravity are narrated in this book
in the most lucid and simple language by Einstein the founder
of modern physics.