Some of our beliefs are fundamentally about ourselves: these are beliefs about who we are, where we are, and which features we have. Philosophers typically suppose that the contents of our beliefs and other cognitive attitudes are propositions. Propositions are things that might be true or false, and their truth values do not vary from time to time, place to place, or person to person. The main thesis of this book is that this supposition is mistaken and must be replaced with another view about content. The view that belief contents are propositions breaks down in the face of belief about the ... More

Some of our beliefs are fundamentally about ourselves: these are beliefs about who we are, where we are, and which features we have. Philosophers typically suppose that the contents of our beliefs and other cognitive attitudes are propositions. Propositions are things that might be true or false, and their truth values do not vary from time to time, place to place, or person to person. The main thesis of this book is that this supposition is mistaken and must be replaced with another view about content. The view that belief contents are propositions breaks down in the face of belief about the self, or so-called de se belief. On the view defended here, the content of a de se belief is a property that the believer reflexively takes himself or herself to have. The relation of self-ascription connects believers and such properties. Unlike propositions, properties lack absolute truth values that do not vary with time, place, or person. This book offers a sustained defense of the property theory of content, according to which the content of every cognitive attitude is a property rather than a proposition. The theory is supported with some new arguments, defended from various objections, and applied to some important problems and puzzles in the philosophy of mind.