His doctoral dissertation was a critical study of the Table Talk of Martin Luther .
He wrote major biographies of Martin Luther and Erasmus. Smith was a professor at Amherst College , Cornell University , Harvard University , and Williams College .
His doctoral dissertation was a critical study of the Table Talk of Martin Luther and he wrote major biographies of Luther and Erasmus. Smith was a professor at Amherst College , Cornell University , Harvard University , and Williams College .