" This second volume of letters begins at that point, and the reader soon discovers what a ‘tremendous difference’ conversion to Christianity made in Lewis. In the Family Letters Lewis was struggling to find his voice as a poet; in the letters included in this volume he had, it seems, found many voices. He writes on such a wide range of subjects that some readers will wonder if, perhaps, there was more than one C. S. Lewis. "

― C.S. Lewis , The Collected Letters of C.S. Lewis, Volume 2: Books, Broadcasts, and the War, 1931-1949