"There goes with this a certain coldness in the Stoic conception of virtue. Not only bad passions are condemned, but all passions. The sage does not feel sympathy: when his wife or his children die, he reflects that this event is no obstacle to his own virtue, and therefore he does not suffer deeply. Friendship, so highly prized by Epicurus, is all very well, but it must not be carried to the point where your friend's misfortunes can destroy your holy calm. As for public life, it may be your duty to engage in it, since it gives opportunities for justice, fortitude, and so on; but you must not be actuated by a desire to benefit mankind, since the benefits you can confer — such as peace, or a more adequate supply of food — are no true benefits, and, in any case, nothing matters to you except your own virtue. The Stoic is not virtuous in order to do good, but does good in order to be virtuous. It has not occurred to him to love his neighbour as himself; love, except in a superficial sense, is absent from his conception of virtue."