"We have been sorely in need of a ground-up reassessment of Heidegger's radically innovative philosophy of logic. Greg Shirley has produced a breakthrough study, elegantly reconstructing the elements of Heidegger's transcendental account of the conditions on apophantic judgment, and showing its continued relevance to our contemporary logical paradigms. Shirley's book must finally put to rest the myth of Heidegger as an irrationalist opponent of logic." - Professor Wayne Martin, University of Essex, UK "Careful and comprehensive, this is an excellent book on Heidegger's rarely understood philosophical critique of logic. In clear jargon-free prose Dr. Shirley provides a detailed account of the fundamental role that logic plays in Heidegger's thought of the Being and Time period. This book should put to rest, once and for all, the misguided and ill-informed tendency to characterize Heidegger as an irrationalist." - Stephan Kaufer, Franklin & Marshall College, USA