In the early 1950s the author began planning a prose volume that would bring together some of his published essays, lectures, and reviews, together with freshly-written notes and aphorisms. This book combines earlier material with revised versions of many of his Oxford lectures.

In the early 1950s the author began planning a prose volume that would bring together some of his published essays, lectures, and reviews, together with freshly-written notes and aphorisms. This book combines earlier material with revised versions of many of his Oxford lectures.