Here the author discusses the relationship between Hume and foundationalism, coherentism, and infinitism, the three responses to Agrippa’s trilemma. What those theories share is the traditional, commonsense and anti-Humean idea that our theories are justified to the extent that they are probable relative to the fact that they (or we) meet various conditions specified by those theories. The author goes on to discuss Ernest Sosa’s version of virtue theory, and Robert Nozick’s distinctive theory of knowledge. Finally, the author argues that the concept of knowledge is of no epistemological interest. The argument is a simplification and generalization of Gettier’s argument against the idea that knowledge is justified true belief.