Poetry is a sort inspired mathematics, which gives us equations, not for abstract figures, triangles, spheres, and the like, but equations for the human emotions. (E.P.)
Frege taught us that language has "functions":
Concept(object) = a true or false thought.
Likewise, perhaps
Emotion(subject) = a good or bad feeling?
Note that an object is a possible combination of things and a subject is the necessary isolation of a person. (Cf. Woolf on the loneliness that is the truth of things.)