This volume investigates the formative intellectual and personal development of C.S. Lewis during his early years as an academic at Oxford. The text provides a candid look at the author's daily life, his evolving philosophical views, and his complex relationship with his mentor and friend, Owen Barfield. By documenting his struggles with faith, career aspirations, and social interactions, the diary offers a raw, unpolished window into the mind of a man who would later become a prominent literary figure.

This collection serves as a vital resource for scholars and enthusiasts seeking to understand the intellectual foundations of C.S. Lewis before his conversion to Christianity. The diary provides a dense, unfiltered look at his internal development, making it an essential primary source for those studying his later literary output.