Abstract
For many years now, much of BonJour’s work has focused on ways of developing a dilemma he finds in the work of Wilfred Sellars. In his earlier work, BonJour argued against internalist foundationalism using this Sellarsian dilemma. But he has since switched his allegiance and now wants to offer a solution to this dilemma on behalf of internalist foundationalism. He believes that if his solution fails, internalist foundationalism is in serious trouble. I agree with that conditional and my aim in sections 1-3 will be to argue that his solution does fail. In the final section, I will briefly defend externalism against one of BonJour’s objections to it.