In this paper I offer an extensive reading of the role that M.C. Nussbaum, especially in her book Political Emotions. Why Love Matters for Justice, gives to emotions as the center of political normativity. The main criticisms are that she has failed to take into account some important difficulties in defining the central emotion of her analysis that is love, and to satisfy one of the goals of her research, that is to give political liberalism a more tangible core than that of the liberal philosophical tradition.