ABSTRACT
This section is intended mainly for readers to whom the foregoing account has served as an introduction. The works selected, together with their references and bibliographies, will equip them to investigate questions which I have neglected, or where my answers have failed to satisfy. As befits a general work of this kind, footnotes have been used only to give the source of quotations. I have, therefore, taken the opportunity here to acknowledge my debt to those books and articles which I have found most convincing or challenging and on which I have particularly relied in selecting material. The authors must not, of course, be assumed to share the interpretation in support of which I have used their findings, and they may well not agree with the judgments their writings have stimulated me to form.
