Contributor(s):Author: Ludwig WittgensteinEditor: P. M. S. HackerEditor: Joachim SchulteIncorporating significant editorial changes from earlier editions, the fourth edition of Ludwig Wittgensteins PhilosophicalInvestigations is the definitive en face German-Englishversion of the most important work of 20th-century philosophy The extensively revised English translation incorporates manyhundreds of changes to Anscombes original translationFootnoted remarks in the earlier editions have now beenrelocated in the textWhat was previously referred to as Part 2 is nowrepublished as Philosophy of Psychology - A Fragment, and all the remarks in it are numbered for ease of referenceNew detailed editorial endnotes explain decisions oftranslators and identify references and allusions in Wittgensteinsoriginal textNow features new essays on the history of the PhilosophicalInvestigations, and the problems of translatingWittgensteins text Review citationsReference and Research Bk News - pg. 6 - 02/01/2010