 Consciousness and intentionality can seem to pervade much or all of mental life—perhaps they somehow account for what it is to have a mind; at any rate they seem to be important, broad aspects of it. But achieving a general understanding of either is an enormous challenge. Part of this lies in figuring out how they are related. Are they independent? Is one (or each) to be understood in terms of the other? How we address the issues to which these questions give rise can have major implications for our views about mind, knowledge, and value.