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Philosophy has a practical task, a task for humanity. So the Greco-Roman philosophical tradition holds, with remarkable unanimity. If it fails to perform this task, in its research and in its teaching, it will be rightly dismissed as "empty" and trivial. As Epicurus puts it, "Empty is that philosophical argument by which no human suffering is therapeutically treated. For just as there is no use in medicine, unless it casts out the illness of bodies, so too there is no use in philosophy, unless it casts out suffering from the soul."

Martha C. Nussbaum, "No Chance Matter":Philosophy and Public Life.