   Now the following questions arise: are Brentano and the phenomenological tradition right? Do all mental states exhibit intentionality? Is intentionality a feature of every aspect of human experience? Are all forms of consciousness consciousness of something? Does every mental state possess one or the other direction of fit? Do sensations (e.g., pains), feelings, emotions (e.g., depression) all exhibit intentionality? These questions are very controversial in contemporary philosophy of mind. Before examining various contradictory answers to these questions, a preliminary question is relevant. Whether Brentano was right or not, why should we want a mark or a criterion of the mental at all?