This book gathers a series of lectures that were given in December 1933 by the late Professor Kennett. In order to do so, some hard work was required, such as verifying the quotations and correcting the proofs. Some people helped to make it possible, like Mr. G. A. Yates, the last student of Professor Kennett, who compiled the Indices I. Readers can see all the Professor's characteristics in this book, e.g., the features of his spoken voice, his care for detail used to illustrate, and a combination of critical boldness and appreciation of what the text contains.