According to the Perceptual Analysis of Emotional Expression, behaviors express emotions by making them perceptually manifest. A smile is an expression of joy because an observer who sees a smile can see joy. A pout is an expression of grief because an observer who sees a pout can see grief. And a growl is an expression of anger because an observer who hears a growl can hear anger. The idea is not simply that expressions can enable the perception of emotion, but that expressions essentially do so. In the course of defending this analysis against challenges, I develop a novel account of the relationship between language and expression.Keywords Expression · Emotion · Perception · Evidence · Language "We see emotion." -As opposed to what? -We do not see facial contortions and make the inference that he is feeling joy, grief, boredom. We describe a face immediately as sad, radiant, bored, even when we are unable to give any other description of the features. -Grief, one would like to say, is personified in the face. (Wittgenstein 1980, §570) A satisfying analysis of "emotional expression" ought to specify the necessary and jointly sufficient conditions under which a bit of behavior will count as an expression of emotion. This analysis ought to tell us why a smile is an expression of joy, a pout is an expression of grief, and a growl is an expression of anger. Furthermore, it ought to tell us why other behaviors, like coughing and wheezing, aren't (typically) expressions of emotion at all. B Trip Glazer trip.