Abstract: Here I consider the way in which practical reason involves a discrimination of salience. My concern is thus with practical reason as a kind of perception and sensitivity to changing particulars. I first introduce the issue in the context of Aristotle's discussion of equity (epieikeia) and flexible and fair judgement of cases in the law. I then extend the discussion by considering what Aristotle might regard as lacking in a Kantian account of moral choice that emphasizes universalizability. From here I turn to Aristotle's substantive account, and his view of perception as both an affective and cognitive capacity.

Keywords: Aristotle, discernment, emotional sensitivity , equity, practical reason, right reason,