Introduction : in defence of psychologism -- Brentano's concept of intentional inexistence -- Wittgenstein on intentionality -- The origins of qualia -- Intentionality as the mark of the mental -- Intentional objects -- The intentional structure of consciousness -- Intentionalism -- The non-conceptual content of experience -- Is there a perceptual relation? -- Is perception a propositional attitude? -- The given -- Unconscious belief and conscious thought -- Subjective facts -- Papineau on phenomenal concepts -- Tye on acquaintance and the problem of consciousness.