Vice and Reason

Aristotle's account of vice presents a puzzle: (1) Viciouspeople must be guided by reason, since they act on decision(prohairesis), not on their non-rational desires. (2) And yet theycannot be guided by reason, since they are said to pay attention totheir non-rational part and not to live in accordance with reason. Wecan understand the conception of vice the reconciles these two claims,once we examine Aristotle's account of (a) the pursuit of the fine andof the expedient; (b) the connexion between vice and the pursuit ofpleasure; (c) the particular kind of regret to which the vicious personis subject.