In this thought-provoking companion to Warrant: The Current Debate, Alvin Plantinga presents a groundbreaking perspective on the long-standing question of epistemic warrant, exploring what transforms a true belief into genuine knowledge. Plantinga's innovative approach posits that warrant hinges on the optimal operation of our cognitive faculties within a conducive cognitive environment. While this volume builds upon the foundations laid in its predecessor, it stands as a self-contained and engaging contribution to the field of epistemology, accessible to readers without prior familiarity with the earlier work.