There is nothing more distinctive of Socrates than the doctrine that virtue is knowledge. Here too the Stoics followed him, ignoring all that Aristotle had done in showing the part played by the emotions and the will in virtue. Reason was with them a principle of action; with Aristotle it was a principle that guided action, but the motive power had to come from elsewhere. Socrates must even be held responsible for the Stoic paradox of the madness of all ordinary folk. The Stoics did not owe much to the Peripatetics. There was too much balance about the master mind of Aristotle for their narrow intensity. His recognition of the value of the passions was to them an advocacy of disease in moderation: his admission of other elements besides virtue into the conception of happiness seemed to them to be a betrayal of the citadel, to say as he did that the exercise of virtue was the highest good was no merit in their eyes, unless it were added to the confession that there was none beside it. The Stoics tried to treat man as a being of pure reason. The Peripatetics would not shut their eyes to his mixed nature, and contended that the good of such a being must also be mixed, containing in it elements which had reference to the body and its environment. The goods of the soul indeed, they said, far outweighed those of body and estate, but still the latter had a right to be considered. Though the Stoics were religious to the point of superstition, yet they did not invoke the terrors of theology to enforce the lesson of virtue. Plato does this even in the very work, the professed object of which is to prove the _intrinsic_ superiority of justice to injustice. But Chrysippus protested against Plato's procedure on this point, declaring that the talk about punishment by the gods was mere 'bugaboo'. By the Stoics indeed, no less than by the Epicureans, fear of the gods was discarded from philosophy. The Epicurean gods took no part in the affairs of men; the Stoic God was incapable of anger. The absence of any appeal to rewards and punishments was a natural consequence of the central tenet of the Stoic morality: that virtue is in itself the most desirable of all things. Another corollary that flows with equal directness from the same principle is that is better to be than to seem virtuous. Those who are sincerely convinced that happiness is to be found in wealth or pleasure or power prefer the reality to the appearance of these goods; it must be the same with him who is sincerely convinced that happiness lies in virtue.