According to Epicurus, for example, "Vain is the word of a philosopher which does not heal any suffering of man. For just as there is no profit in medicine if it does not expel the diseases of the body, so there is no profit in philosophy either, if it does not expel the suffering of the mind."’ William B. Irvine, A Guide to the Good Life: The Ancient Art of Stoic Joy, loc. 64. Kindle Edition Tags: quote