PREFACE TO THE FOURTH EDITION (1918)
1. I have altered the opening pages in accordance with the Preface to the edition of 1905.
2. I have added a paragraph on Syndicalism (pp. 291-2).
3. Also a new Table of Addenda et Corrigenda, and a new Index.
The quotations from St. Thomas may be read in English, nearly all of them, in the Author's Aquinas Ethicus, 2 vols.; 12s. (Burns and Oates.)