Such being the functions of Epicureanism, the constructive or positive side of ethical teaching devolved almost exclusively upon Stoicism; for although there were a few philosophers who expressed themselves in strong opposition to some portions of the Stoical system, their efforts usually tended to no more than a modification of its extreme and harshest features. The Stoics asserted two cardinal principles—that virtue was the sole legitimate object to be aspired to, and that it involved so complete an ascendancy of the reason as altogether to extinguish the affections. The Peripatetics and many other philosophers, who derived their opinions chiefly from Plato, endeavoured to soften down the exaggeration of these principles. They admitted that virtue was an object wholly distinct from interest, and that it should be the leading motive of life; but they maintained that happiness was also a good, and a certain regard for it legitimate. They admitted that virtue consisted in the supremacy of the reason over the affections, but they allowed the exercise of the latter within restricted limits. The main distinguishing features, however, of Stoicism, the unselfish ideal and the controlling reason, were acquiesced in, and each represents an important side of the ancient conception of excellence which we must now proceed to examine. In the first we may easily trace the intellectual expression of the high spirit of self-sacrifice which the patriotic enthusiasm had elicited. The spirit of patriotism has this peculiar characteristic, that, while it has evoked acts of heroism which are both very numerous and very sublime, it has done so without presenting any prospect of personal immortality as a reward. Of all the forms of human heroism, it is probably the most unselfish. The Spartan and the Roman died for his country because he loved it. The martyr’s ecstasy of hope had no place in his dying hour. He gave up all he had, he closed his eyes, as he believed, for ever, and he asked for no reward in this world or in the next. Even the hope of posthumous fame—the most refined and supersensual of all that can be called reward—could exist only for the most conspicuous leaders. It was examples of this nature that formed the culminations or ideals of ancient systems of virtue, and they naturally led men to draw a very clear and deep distinction between the notions of interest and of duty. It may, indeed, be truly said, that while the conception of what constituted duty was often very imperfect in antiquity, the conviction that duty, as distinguished from every modification of selfishness, should be the supreme motive of life was more clearly enforced among the Stoics than in any later society.