Abstract

Our understanding of Locke’s theory of ideas is stymied by his reticence about what he means by ‘idea’. I attempt to work around the problem by focusing on some neglected questions that afford us a better picture of his theory. I ask not what his ideas are, but what kinds of states or episodes he counts as someone’s having an idea, and what is involved in having simple and complex ideas. I argue that although we can make sense of much of what he says about having simple and complex ideas, he is muddled about simplicity and complexity