Locke defines knowledge as the perception of the agreement or disagreement of ideas. Nevertheless, he claims that we know particular things: the identity of our ideas, our own existence, and the existence of external objects. Although much has been done to reconcile the definition of knowledge with our knowledge of external objects, there is virtually nothing in the scholarship when it comes to knowing ideas or our own existence. I fill in this gap by arguing that perceptions of ideas are (...) complex mental states that convey propositional knowledge due to agreeing elements therein. (shrink)

The standard objection to Locke’s epistemology is that his conception of knowledge inevitably leads to skepticism about external objects. One reason for this complaint is that Locke defines knowledge as the perception of a relation between ideas, but perceiving relations between ideas does not seem like the kind of thing that can give us knowledge that tables and chairs exist. Thus Locke’s general definition of knowledge seems to be woefully inadequate for explaining knowledge of external objects. However, this interpretation and (...) subsequent criticism ignore a special category of knowledge Locke calls “real knowledge”, which is Locke’s own account of how we can have knowledge of the real world. In in this paper I argue that real knowledge of substances requires that, in addition to the perception of a relation between ideas, there be a necessary connection between our ideas and the external objects they represent. It is because Locke thinks there is a necessary connection between these ideas and reality that he thinks the perception of ideas can give us knowledge of the actual world. (shrink)