Thus we find Pyrrho competing with the dogmatists as a practical moralist, and offering to secure the inward tranquillity at which they too aimed by an easier method than theirs. The last eminent representative of the sceptical school, Sextus Empiricus, illustrates its pretensions in this respect by the well-known story of Apelles, who, after vainly endeavouring to paint the foam on a horse’s mouth, took the sponge which he used to wipe his easel, and threw it at the picture in vexation. The mixture of colours thus accidentally applied produced the exact effect which he desired, but at which no calculation could arrive. In like manner, says Sextus, the confusion of universal doubt accidentally resulted in the imperturbability which accompanies suspense of judgment as surely as a body is followed by its shadow.[229] There was, however, no accident about the matter at all. The abandonment of those studies which related to the external world was a consequence of the ever-increasing attention paid to human interests, and that these could be best consulted by complete detachment from outward circumstances, was a conclusion inevitably suggested by the negative or antithetical moment of Greek thought. Hence, while the individualistic and apathetic tendencies of the age were shared by every philosophical school, they had a closer logical connexion with the idealistic than with the naturalistic method; and so it is among the successors of Protagoras that we find them developed with the greatest distinctness; while their incorporation with Stoicism imposed a self-contradictory strain on that system which it never succeeded in shaking off. Epicureanism occupied a position midway between the two extremes; and from this point of view, we shall be better able to understand both its inherent weakness as compared with the other ancient philosophies, and the admiration which it has attracted from opposite quarters in recent years. To some it is most interesting as a revelation of law in Nature, to others as a message of deliverance to man—not merely a deliverance from ignorance and passion, such as its rivals had promised, but from all established systems, whether religious, political, or scientific. And unquestionably Epicurus did endeavour to combine both points of view in his theory of life. In seeking to base morality on a knowledge of natural law he resembles the Stoics. In his attacks on fatalism, in his refusal to be bound down by a rigorously scientific explanation of phenomena, in his failure to recognise the unity and power of Nature, and in his preference of sense to reason, he partially reproduces the negative side of Scepticism; in his identification of happiness with the tranquil and imperturbable self-possession of mind, in his mild humanism, and in his compliance with the established religion of the land, he entirely reproduces its positive ethical teaching. On the other hand, the two sides of his philosophy, so far from completing,