Liberty is perhaps the most praised of all social ideals. Rare is the modern political movement which has not inscribed "liberty," "freedom," "liber- ation," or "emancipation" prominently on its banners. Rarer still is the political leader who has spoken out against liberty, though, of course, some have condemned "license. " While there is overwhelming agreement on the value of liberty, however, there is a great deal of disagreement on what liberty is. It is this fact that explains how it is possible for the most violently opposed of political parties to pay homage to the "same" ideal. From...

1. STRUCTURE AND REFERENCES 1.1. The main part of the dictionary consists of alphabetically arranged articles concerned with basic logical theories and some other selected topics. Within each article a set of concepts is defined in their mutual relations. This way of defining concepts in the context of a theory provides better understand ing of ideas than that provided by isolated short defmitions. A disadvantage of this method is that it takes more time to look something up inside an extensive article. To reduce this disadvantage the following measures have been adopted. Each article is...

Identity has for long been an important concept in philosophy and logic. Plato in his Sophist puts same among those fonns which "run through" all others. The scholastics inherited the idea (and the tenninology), classifying same as one of the "transcendentals", i.e. as running through all the categories. The work of Locke and l.eibniz made the concept a problematic one. But it is rather recently, i.e. since the importance of Frege has been generally recognized, that there has been a keen interest in the notion, fonnulated by him, of a criterion of identity. This, at first sight harmless as...

The history of aesthetics, like the histories of other sciences, may be treated in a two-fold manner: as the history of the men who created the field of study, or as the history of the questions that have been raised and resolved in the course of its pursuit. The earlier History of Aesthetics (3 volumes, 1960-68, English-language edition 1970-74) by the author of the present book was a history of men, of writers and artists who in centuries past have spoken up concerning beauty and art, form and crea tivity. The present book returns to the same subject, but treats it in a different way: as...