This book brings together chapters that explore key issues in the philosophy of logic, beginning with foundational definitions aimed at clarifying its scope and central problems. It addresses the question of logic’s neutrality across various theories and critiques the conceptual definition of logical truth as potentially invalid. The book also examines challenges to modal logic, particularly the rejection of the concept of necessity and the reassessment of essentialist views. A comprehensive understanding of these issues requires revisiting the logical positivists’ emphasism on linguistic and logical analysis in philosophy. Within this context, Quine’s philosophy of logic emerges as a pivotal critique of the analytic tradition, questioning the assumptions underlying logical theory. His approach signals a post-analytic shift with lasting influence on the philosophy of science, particularly through his challenge to conventional logical structures and his broader philosophical contributions.