Einstein shown as relative failure

To many he is the greatest scientist who ever lived, but a unique collection of Albert Einstein's letters and papers has revealed a history of struggle and failure made worse by an apparently shaky grasp of maths.

An archive that goes on sale in London next month with a price tag of £800,000 ($2 million) shows how after transforming physics and securing unprecedented celebrity status with his general theory of relativity in 1916, Einstein suffered years of frustration as he failed to top that with "a grand theory of everything". The 15 manuscripts and 33 letters written between 1933 and 1954 give a glimpse into a period in Einstein's life when he strayed away from mainstream physics and grappled with the most fundamental questions in the universe.

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