Ernest Sosa has made and continues to make major contributions to a wide variety of topics in epistemology. In this paper I discuss some of his core ideas about the nature of knowledge and scepticism. I start with a discussion of and objections against the safety account of knowledge—a view he has championed and further developed over the years. I continue with some questions concerning the role of the concept of an epistemic virtue for our understanding of knowledge. Safety and virtue hang very closely together for Sosa. All this easily leads to some thoughts on epistemic scepticism and on Sosa’s stance on this.
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