The book gives excellent insight as to how and why the theory was developed. It clearly shows how the theory better explains certain parts of our universe.

The only drawback is that the mathematical level may cause the book to be unapproachable to many. I reccommend at least one year of Calculus if you intend to understand the works fully. Without such a background the book is difficult at best, but still rewarding.

If you lack this background you might be better served by reading Einsteins Relativity, the first book in the list above of what purchasers of this book also bought.

Nonetheless I agree with the School Science and Mathematics review,"It is really a thrill to read again the original papers by these giants."