In the dialogue De Naturâ Deorum, the author presents the doctrines of three of the most distinguished sects among the ancients—the Epicureans, the Stoics, and the Academics—on the important subject of the Nature of the Divine Essence, and of Providence. He introduces three illustrious persons of his country, each elucidating the tenets of the sect that he preferred, and contending for them, doubtless, with the chief arguments which the learning or talents of the author himself could supply. Cicero represents himself as hav[pg 244]ing gone to the house of C. Cotta the Pontifex Maximus, whom he found sitting in his study with C. Velleius, a Senator, who professed the principles of Epicurus, and Q. Lucilius Balbus, a supporter of the doctrines of the Stoics.—“As soon as Cotta saw me, ‘You are come,’ says he, ‘very seasonably, for I have a dispute with Velleius upon an important subject, in which, considering the nature of your studies, it is not improper for you to join.’—‘Indeed,’ said I, ‘I am come very seasonably, as you say, for here are three chiefs of the three principal sects met together.’ ” Cotta himself is a new Academic, and he proceeds to inform Cicero that they were discoursing on the nature of the gods, a topic which had always appeared to him very obscure, and that therefore he had prevailed on Velleius to state the sentiments of Epicurus upon the subject. Velleius is requested to go on with his arguments; and after recapitulating what he had already said, “with the confidence peculiar to his sect, dreading nothing so much as to seem to doubt about anything, he began, as if he had just then descended from the council of the gods[434].”

The discourse of Velleius consists, in a considerable degree, of raillery and declamations directed against the doctrines of different sects, of which he enumerates a great variety, and which supposes in Cicero extensive philosophical erudition, or rather, perhaps, from the slight manner in which they are passed over, that he had taken his account of them from some ancient Diogenes Laertius, or Stanley[435].—“I have hitherto,” says Velleius, “rather exposed the dreams of dotards than the opinions of philosophers; and whoever considers how rashly [pg 245]and inconsiderately their tenets are advanced, must entertain a veneration for Epicurus, and rank him in the number of those beings who are the subject of this dispute, for he alone first founded the existence of the gods, on the impression which nature herself hath made on the minds of men.”

Velleius having concluded his discourse, (the remainder of which can now have little interest as relating to the form of the gods and their apathy,) Cotta, after some compliments to him, enters on a confutation of what he had advanced; and, while admitting that there are gods, he pronounces the reasons given by Velleius for their existence to be altogether insufficient. He then proceeds to attack the other positions of Velleius, with regard to the form of the gods, and their exemption from the labours of creation and providence. His arguments against Anthropomorphism are excellent; and in reply to the hypothesis of Epicurus concerning the indolence of the gods, he inquires, “What reason is there that men should worship the gods, when the gods, as you say, not only do not regard men, but are entirely careless of everything, and absolutely do nothing? But they are, you say, of so glorious a nature, that a wise man is induced by their excellence to adore them. Can there be any glory in that nature, which only contemplates its own happiness, and neither will do, nor does, nor ever did anything? Besides, what piety is due to a being from whom you receive nothing, or how are you indebted to him who bestows no benefits?”

When Cotta has concluded his refutation of Velleius, with which the first book closes, Balbus is next requested to give the sentiments of the Stoics, on the subject of the gods, to which, making a slight excuse, he consents. His first argument for their existence, after shortly alluding to the magnificence of the world, and the prevalence of the doctrine, is “the frequent appearance of the gods themselves. In the war with the Latins,” he continues, “when A. Posthumius, the Dictator, attacked Octavius Mamilius, the Tusculan, at Regillus, Castor and Pollux were seen fighting in our army on horseback, and since that time the same offspring of Tyndarus gave notice of the defeat of Perseus; for P. Vatienus, grandfather of the present youth of that name, coming in the night to Rome, from his government of Reate, two young men on white horses appeared to him, and told him King Perseus was that day taken prisoner. This news he carried to the Senate, who immediately threw him into prison, for speaking inconsiderately on a state affair; but when it was confirmed by letters from Paullus, he was recompensed by the Senate with land and exemption. The voices of the Fauns have been often heard, and [pg 246]deities have appeared in forms so visible, that he who doubts must be hardened in stupidity or impiety.”

Balbus, after farther arguing for the existence of the gods, from events consequent on auguries and auspices, proceeds to what is more peculiarly the doctrine of the Stoics. He remarks,—“that Cleanthes, one of the most distinguished philosophers of that sect, imputes the idea of the gods implanted in the minds of men, to four causes—The first is, what I just now mentioned, a pre-knowledge of future things: The second is, the great advantages we enjoy from the temperature of the air, the fertility of the earth, and the abundance of various kinds of benefits: The third is, the terror with which the mind is affected by thunder, tempests, snow, hail, devastation, pestilence, earthquakes, often attended with hideous noises, showers of stones, and rain like drops of blood. His fourth cause,” continues Balbus, “and that the strongest, is drawn from the regularity of the motion, and revolution of the heavens, the variety, and beauty, and order of the sun, moon, and stars; the appearance only of which is sufficient to convince us they are not the effects of chance; as when we enter into a house, a school, or court, and observe the exact order, discipline, and method therein, we cannot suppose they are so regulated without a cause, but must conclude there is some one who commands, and to whom obedience is paid; so we have much greater reason to think that such wonderful motions, revolutions, and order of those many and great bodies, no part of which is impaired by the vast infinity of age, are governed by some intelligent being.”

This argument is very well stated, but Balbus, in a considerable degree, weakens its effect, by proceeding to contend, that the world, or universe itself, (the stoical deity,) and its most distinguished parts, the sun, moon, and stars, are possessed of reason and wisdom. This he founds partly on a metaphysical argument, and partly on the regularity, beauty, and order of their motions.

Balbus, after various other remarks, enters on the topic of the creation of the world, and its government by the providence of the gods. He justly observes, that nothing can be more absurd than to suppose that a world, so beautifully adorned, could be formed by chance, or by a fortuitous concourse of atoms[436]. “He who believes this possible,” says he, “may [pg 247]as well believe, that if a great number of the one-and-twenty letters, composed either of gold, or any other metal, were thrown on the ground, they would fall into such order as legibly to form the Annals of Ennius. I doubt whether fortune could make a single verse of them.” He quotes a very beautiful passage from a now lost work of Aristotle, in which that philosopher urges the argument that may be deduced from providential design, with more soundness and imagination than are usual with him. Balbus then proceeds to display the marks of deliberate plan in the universe, beginning with astronomy. In treating of the constellations, he makes great use of Cicero’s poetical version of Aratus, much of which he is supposed, perhaps with little probability, or modesty in the author, to have by heart; and, accordingly, we are favoured with a considerable number of these verses. He also adduces manifold proofs of design and sovereign wisdom, from a consideration of plants, land animals, fishes, and the structure of the human body; a subject on which Cicero discovers more anatomical knowledge than one should have expected. Balbus also contends that the gods not only provide for mankind universally, but for individuals. “The frequent appearances of the gods,” he observes, “demonstrate their regard for cities and particular men. This, indeed, is also apparent from the foreknowledge of events, which we receive either sleeping or waking.”

Cicero makes Balbus, in the conclusion of his discourse, express but little confidence in his own arguments.—“This is almost the whole,” says he, “that has occurred to my mind, on the nature of the gods, and that I thought proper to advance. Do you, Cotta, if I may advise, defend the same cause. Remember that in Rome you keep the first rank—remember you are Pontifex. It is a pernicious and impious custom, either seriously or seemingly to argue against the gods.”

In the third book of this very remarkable work, Cicero exhibits Cotta as refuting the doctrines of Balbus. “But before I enter on the subject,” says Cotta, “I have a word to say concerning myself; for I am greatly influenced by your authority, and your exhortation at the conclusion of your discourse, to remember I was Cotta, and Pontifex; by which, I presume, you intimated that I should defend the religion and ceremo[pg 248]nies which we received from our ancestors: Truly, I always have, and always will defend them, nor shall the arguments, either of the learned or unlearned, ever remove the opinions I have imbibed concerning the worship of the immortal gods. In matters of religion, I submit to the rules of the High Priests, T. Coruncanius, P. Scipio, and P. Scævola. These, Balbus,” continues he, “are my sentiments, both as a priest and Cotta. But you must bring me to your opinion by the force of your reason; for a philosopher should prove to me the religion he would have me embrace; but I must believe without proof the religion of our ancestors.”

The Pontifex thus professing to believe the existence of the gods merely on the authority of his ancestors, proceeds to ridicule this very authority. He represents the appearances of Castor and Pollux, and those others adduced by Balbus, as idle tales. “Do you take these for fabulous stories?” says Balbus. “Is not the temple built by Posthumius, in honour of Castor and Pollux, to be seen in the Forum? Is not the decree of the Senate concerning Vatienus still subsisting? Ought not such authorities to move you?”—“You oppose me,” replies Cotta, “with stories; but I ask reasons of you.”