Many people tend to see manners as trivial things that are outdated. This paper, challenging a possible view of manners as a bygone standard of conduct or mere hypocritical capacities to act well, argues that good manners play an essential moral role. In Part 2 of this paper, I invoke Aristotelian concept of ‘practical wisdom’ in order to make my point. Austen shows that without the capacity both to notice moral situations and to behave in a well-mannered way accordingly, we fall short of full virtue. Austen also emphasizes the fact that even those who have perceptual capacity could lack manners, especially in the important moralized sense. In Part 3, this paper, using Peter Strawson’s notion of ‘reactive attitude’, examines how people often form relationships by expressing their attitudes and emotions, as well as investigates in the name of manners that reactive attitudes inevitably involve a form of social signaling.