How can we reconcile the nature of human knowledge with the persistent challenges posed by philosophical skepticism? Ernest Sosa, a prominent figure in contemporary analytic philosophy, develops a virtue-theoretic framework to address the structure of knowledge. By distinguishing between animal and reflective knowledge, he argues that epistemic success is a form of performance excellence, drawing on historical insights from Aristotle, Aquinas, and Descartes to ground his normative account.

Experts frequently cite this work as a foundational text for understanding the shift toward virtue-based approaches in modern epistemology. Readers often note the high academic density of the prose, which requires significant engagement with the history of philosophy to fully grasp the author's arguments.