of their art. But in the eyes both of the philanthropist and of the philosopher, the greatest of all results to be expected in this, or perhaps any other field, are, I conceive, to be looked for in the study of the relations between our physical and our moral natures. He who raises moral pathology to a science, expanding, systematising, and applying many fragmentary observations that have been already made, will probably take a place among the master intellects of mankind. The fastings and bleedings of the mediæval monk, the medicines for allaying or stimulating the sensual passions, the treatment of nervous diseases, the moral influences of insanity and of castration, the researches of phrenology, the moral changes that accompany the successive stages of physical developments, the instances of diseases which have altered, sometimes permanently, the whole complexion of the character, and have acted through the character upon all the intellectual judgments,147 are examples of the kind of facts with which such a science would deal. Mind and body are so closely connected that even those who most earnestly protest against materialism readily admit that each acts continually upon the other. The sudden emotion that quickens the pulse, and blanches or flushes the cheek, and the effect of fear in predisposing to an epidemic, are familiar instances of the action of the mind upon the body, and the more powerful and permanent influence of the body upon the disposition is attested by countless observations. It is probable that this action extends to all parts of our moral constitution, that every passion or characteristic tendency has a physical predisposing cause, and that if we were acquainted with these, we might treat by medicine the many varieties of moral disease as systematically as we now treat physical disease. In addition to its incalculable practical importance, such knowledge would have a great philosophical value, throwing a new light upon the filiation of our moral qualities, enabling us to treat exhaustively the moral influence of climate, and withdrawing the great question of the influence of race from the impressions of isolated observers to place it on the firm basis of experiment. It would thus form the complement to the labours of the historian.
Such discoveries are, however, perhaps far from attainment, and their discussion does not fall within the compass of this work. My present object is simply to trace the action of external circumstances upon morals, to examine what have been the moral types proposed as ideal in different ages, in what degree they have been realised in practice, and by what causes they have been modified, impaired, or destroyed.
Chapter II. The Pagan Empire.
One of the first facts that must strike a student who examines the ethical teaching of the ancient civilisations is how imperfectly that teaching was represented, and how feebly it was influenced by the popular creed. The moral ideas had at no time been sought in the actions of the gods, and long before the triumph of Christianity, polytheism had ceased to have any great influence upon the more cultivated intellects of mankind.
In Greece we may trace from the earliest time the footsteps of a religion of nature, wholly different from the legends of the mythology. The language in which the first Greek dramatists asserted the supreme authority and universal providence of Zeus was so emphatic, that the Christian Fathers commonly attributed it either to direct inspiration or to a knowledge of the Jewish writings, while later theologians of the school of Cudworth have argued from it in favour of the original monotheism of our race. The philosophers were always either contemptuous or hostile to the prevailing legends. Pythagoras is said to have declared that he had seen Hesiod tied to a brazen pillar in hell, and Homer hung upon a tree surrounded by serpents, on account of the fables they had invented about the gods.148 Plato, for the same reason, banished the poets from his republic. Stilpo turned to ridicule the whole system of sacrifices,149 and was exiled from Athens for denying that the Athene of Phidias was a goddess.150 Xenophanes remarked that each nation attributed to the gods its distinctive national type, the gods of the Æthiopians being black, the gods of the Thracians fair and blue-eyed.151 Diagoras and Theodorus are said to have denied, and Protagoras to have questioned the existence of the gods,152 while the Epicureans deemed them wholly indifferent to human affairs, and the Pyrrhonists pronounced our faculties absolutely incapable of attaining any sure knowledge, either human or divine. The Cynic Antisthenes said that there were many popular gods, but there was only one god of nature.153 The Stoics, reproducing an opinion which was supported by Aristotle and attributed to Pythagoras,154 believed in an all-pervading soul of nature, but unlike some modern schools which have adopted this view, they asserted in emphatic language the doctrine of Providence, and the self-consciousness of the Deity.
In the Roman republic and empire, a general scepticism had likewise arisen among the philosophers as the first fruit of intellectual development, and the educated classes were speedily divided between avowed or virtual atheists, like the Epicureans,155 and pure theists, like the Stoics and the Platonists. The first, represented by such writers as Lucretius and Petronius, regarded the gods simply as the creations of fear, denied every form of Providence, attributed the world to a concurrence of atoms, and life to spontaneous generation, and regarded it as the chief end of philosophy to banish as illusions of the imagination every form of religious belief. The others formed a more or less pantheistic conception of the Deity, asserted the existence of a Providence,156 but treated with great contempt the prevailing legends which they endeavoured in various ways to explain. The first systematic theory of explanation appears to have been that of the Sicilian Euhemerus, whose work was translated by Ennius. He pretended that the gods were originally kings, whose history and genealogies he professed to trace, and who after death had been deified by mankind.157 Another attempt, which in the first period of Roman scepticism was more generally popular, was that of some of the Stoics, who regarded the gods as personifications of the different attributes of the Deity, or of different forces of nature. Thus Neptune was the sea, Pluto was fire, Hercules represented the strength of God, Minerva His wisdom, Ceres His fertilising energy.158 More than a hundred years before the Empire, Varro had declared that “the soul of the world is God, and that its parts are true divinities.”159 Virgil and Manilius described, in lines of singular beauty, that universal spirit, the principle of all life, the efficient cause of all motion, which permeates and animates the globe. Pliny said that “the world and sky, in whose embrace all things are enclosed, must be deemed a god, eternal, immense, never begotten, and never to perish. To seek things beyond this is of no profit to man, and they transcend the limits of his faculties.”160 Cicero had adopted the higher Platonic conception of the Deity as mind freed from all taint of matter,161 while Seneca celebrated in magnificent language “Jupiter the guardian and ruler of the universe, the soul and spirit, the lord and master of this mundane sphere, … the cause of causes, upon whom all things hang. … Whose wisdom oversees the world that it may move uncontrolled in its course, … from whom all things proceed, by whose spirit we live, … who comprises all we see.”162 Lucan, the great poet of stoicism, rose to a still higher strain, and to one which still more accurately expressed the sentiments of his school, when he described Jupiter as that majestic, all-pervasive spirit, whose throne is virtue and the universe.163 Quintilian defended the subjugation of the world beneath the sceptre of a single man, on the ground that it was an image of the government of God. Other philosophers contented themselves with asserting the supreme authority of Jupiter Maximus, and reducing the other divinities to mere administrative and angelic functions, or, as the Platonists expressed it, to the position of dæmons. According to some of the Stoics, a final catastrophe would consume the universe, the resuscitated spirits of men and all these minor gods, and the whole creation being absorbed into the great parent spirit, God would be all in all. The very children and old women ridiculed Cerberus and the Furies164 or treated them as mere metaphors of conscience.165 In the deism of Cicero the popular divinities were discarded, the oracles refuted and ridiculed, the whole system of divination pronounced a political imposture, and the genesis of the miraculous traced to the exuberance of the imagination, and to certain diseases of the judgment.166 Before the time of Constantine, numerous books had been written against the oracles.167 The greater number of these had actually ceased, and the ablest writers justly saw in this cessation an evidence of the declining credulity of the people, and a proof that the oracles had been a fruit of that credulity.168 The Stoics, holding, as was their custom, aloof from direct religious discussion, dissuaded their disciples from consulting them, on the ground that the