II. Philosophical treatises, in dialogue

almost all composed in his earlier life; either during his residence on the country-seat Cassiciacum in the vicinity of Milan, where he spent half a year before his baptism in instructive and stimulating conversation, in a sort of academy or Christian Platonic banquet with Monnica, his son Adeodatus, his brother Navigius, his friend Alypius, and some cousins and pupils; or during his second residence in Rome; or soon after his return to Africa. ¹

To this class belong the works; Contra Academicos libri très (386), in which he combats the skepticism and probabilism of the New Academy,--the doctrine that man can never reach the truth, but can at best attain only probability; De vita beata (386), in which he makes true blessedness to consist in the perfect knowledge of God; De ordine,--on the relation of evil to the divine order of the world ² (386); Soliloquia (387), communings with his own soul concerning God, the highest good, the knowledge of truth, and immortality; De immortalitate animae (387), a continuation of the Soliloquies; De quantitate animae (387), discussing sundry questions of the size, the origin, the incorporeity of the soul; De musica libri vi (387-389); De magistro (389), in which, in a dialogue with his son Adeodatus, a pious and promising, but precocious youth, who died soon after his return to Africa (389), he treats on the importance and virtue of the word of God, and on Christ as the infallible Master. ³ To these may be added the later work, De anima et ejus origine (419). Other philosophical works on grammar, dialectics (or ars bene disputandi), rhetoric, geometry, and arithmetic, are lost. ⁴

These works exhibit as yet little that is specifically Christian and churchly; but they show a Platonism seized and consecrated by the spirit of Christianity, full of high thoughts, ideal views, and discriminating argument. They were designed to present the different stages of human thought by which he himself had reached the knowledge of the truth, and to serve others as steps to the sanctuary. They form an elementary introduction to his theology. He afterwards, in his Retractations, withdrew many things contained in them, like the Platonic view of the pre-existence of the soul, and the Platonic idea that the acquisition of knowledge is a recollection or excavation of the knowledge hidden in the mind. ⁵ The philosopher in him afterwards yielded more and more to the theologian, and his views became more positive and empirical, though in some cases narrower also and more exclusive. Yet he could never cease to philosophise, and even his later works, especially De Trinitate, and De Civitate Dei, are full of profound speculations. Before his conversion he followed a particular system of philosophy, first the Manichaean, then the Platonic; after his conversion he embraced the Christian philosophy, which is based on the divine revelation of the Scriptures, and is the handmaid of theology and religion; but at the same time he prepared the way for the catholic ecclesiastical philosophy, which rests on the authority of the church, and became complete in the scholasticism of the middle age.

In the history of philosophy he deserves a place in the highest rank, and has done greater service to the science of sciences than any other father, Clement of Alexandria and Origen not excepted. He attacked and refuted the pagan philosophy as pantheistic or dualistic at heart; he shook the superstitions of astrology and magic; he expelled from philosophy the doctrine of emanation, and the idea that God is the soul of the world; he substantially advanced psychology; he solved the question of the origin and the nature of evil more nearly than any of his predecessors, and as nearly as most of his successors; he was the first to investigate thoroughly the relation of divine omnipotence and omniscience to human freedom, and to construct a theodicy; in short, he is properly the founder of a Christian philosophy, and not only divided with Aristotle the empire of the mediaeval scholasticism, but furnished also living germs for new systems of philosophy, and will always be consulted in the speculative discussions of Christian doctrines.

The philosophical opinions of Augustin are ably and clearly summed up by Ueberweg as follows: ⁶

"Against the skepticism of the Academics Augustin urges that man needs the knowledge of truth for his happiness, that it is not enough merely to inquire and to doubt, and he finds a foundation for all our knowledge, a foundation invulnerable against every doubt, in the consciousness we have of our sensations, feelings, our willing, and thinking, in short, of all our psychical processes. From the undeniable existence and possession by man of some truth, he concludes to the existence of God as the truth per se; but our conviction of the existence of the material world he regards as only an irresistible belief. Combating heathen religion and philosophy, Augustin defends the doctrines and institutions peculiar to Christianity, and maintains, in particular, against the Neo-Platoniste, whom he rates most highly among all the ancient philosophers, the Christian theses that salvation is to be found in Christ alone, that divine worship is due to no other being beside the triune God, since he created all things himself, and did not commission inferior beings, gods, demons, or angels to create the material world; that the soul with its body will rise again to eternal salvation or damnation, but will not return periodically to renewed life upon the earth; that the soul begins to exist at the same time with the body; that the world both had a beginning and is perishable, and that only God and the souls of angels and men are eternal.--Against the dualism of the Manichaeans, who regarded good and evil as equally primitive, and represented a portion of the divine substance as having entered into the region of evil, in order to war against and conquer it, Augustin defends the monism of the good principle, or of the purely spiritual God, explaining evil as a mere negation or privation, and seeking to show from the finiteness of the things in the world, and from the differing degrees of perfection, that the evils in the world are necessary, and not in contradiction with the idea of creation; he also defends in opposition to Manichaeism, and Gnosticism in general, the Catholic doctrine of the essential harmony between the Old and New Testaments. Against the Donatists, Augustin maintains the unity of the church. In opposition to Pelagius and the Pelagians, he asserts that divine grace is not conditioned on human worthiness, and maintains the doctrine of absolute predestination, or, that from the mass of men who, through the disobedience of Adam (in whom all mankind were present potentially), have sunk into corruption and sin, some are chosen by the free election of God to be monuments of his grace, and are brought to believe and be saved, while the greater number, as monuments of his justice, are left to eternal damnation."

6: "There was also with us, in age the youngest of all, but whose talents, if affection deceives me not, promise something great, my son Adeodatus." In the same book (§ 18), he mentions an answer of his: "He is truly chaste who waits on God, and keeps himself to Him only."