Renowned for his groundbreaking work in metaphysics and philosophy of religion, Alvin Plantinga expands his intellectual reach into epistemology with this book and its companion, Warrant and Proper Function. In this volume, Plantinga delves into the complex question of epistemic warrant, seeking to identify the elusive factor that transforms true belief into genuine knowledge. By meticulously surveying the current landscape of epistemological thought, Plantinga lays the groundwork for his own innovative solution, presented in Warrant and Proper Function. As a result, this inaugural volume provides an accessible and thought-provoking introduction to the core concerns of contemporary epistemology.