I.

Among the systems of ancient philosophy, Epicureanism is remarkable for the completeness with which its doctrines were worked out by their first author, and for the fidelity with which they were handed down to the latest generation of his disciples. For a period of more than five hundred years, nothing was added to, and nothing was taken away from, the original teaching of Epicurus. In this, as in other respects, it offers a striking contrast to the system which we last reviewed. In our sketch of the Stoic philosophy, we had to notice the continual process of development through which it passed, from its commencement to its close. There is a marked difference between the earlier and the later heads of the school at Athens—between these, as a class, and the Stoics of the Roman empire—and, finally, even between two Stoics who stood so near to one another as Epictêtus and Marcus Aurelius. This contrast cannot be due to external circumstances, for the two systems were exactly coeval, and were exposed, during their whole lifetime, to the action of precisely the same environment. The cause must be sought for in the character of the philosophies themselves, and of the minds which were naturally most amenable to their respective influence. Stoicism retained enough of the Socratic spirit to foster a love of enquiry for its own sake, and an indisposition to accept any authority without a searching examination of its claims to obedience or respect. The learner was submitted to a thorough training in dialectics; while the ideal of life set before him was not a state of rest, but of intense and unremitting toil. Whatever particular conclusions he might carry away with him from the class-room were insignificant in comparison with the principle that he must be prepared to demonstrate them for himself with that self-assurance happily likened by Zeno to the feeling experienced when the clenched fist is held within the grasp of the other hand. Epicurus, on the contrary, did not encourage independent thought among his disciples; nor, with one exception hereafter to be noticed, did his teaching ever attract any very original or powerful intellect. From the first a standard of orthodoxy was erected; and, to facilitate their retention, the leading tenets of the school were drawn up in a series of articles which its adherents were advised to learn by heart. Hence, as Mr. Wallace observes,[108] while the other chief sects among which philosophy was divided—the Academicians, the Peripatetics, and the Stoics—drew their appellation, not from their first founder, but from the locality where his lectures had been delivered, the Epicureans alone continued to bear the name of a master whom they regarded with religious veneration. Hence, also, we must add with Zeller,[109] and notwithstanding the doubt expressed by Mr. Wallace,[110] on the subject, that our acquaintance with the system so faithfully adhered to may be regarded as exceptionally full and accurate. The excerpts from Epicurus himself, preserved by Diogenes Laertius, the poem of Lucretius, the criticisms of Cicero, Plutarch, and others, and the fragments of Epicurean literature recovered from the Herculanean papyri, agree so well where they cover the same ground, that they may be fairly trusted to supplement each other’s deficiencies; and a further confirmation, if any was needed, is obtained by consulting the older sources, whence Epicurus borrowed most of his philosophy.

It may safely be assumed that the prejudices once entertained against Epicureanism are now extinct. Whatever may have been the speculative opinions of its founder, he had as good a right to them as the Apostles had to theirs; nor did he stand further aloof from the popular religion of any age than Aristotle, who has generally been in high favour with theologians. His practical teaching was directed towards the constant inculcation of virtue; nor was it belied by the conduct either of himself or of his disciples, even judged by the standard of the schools to which they were most opposed. And some of his physical theories, once rejected as self-evidently absurd, are now proved to be in harmony with the sober conclusions of modern science. At any rate, it is not in this quarter, as our readers will doubtless have already perceived, that the old prejudices, if they still exist, are likely to find an echo. Just now, indeed, the danger is not that Epicurus should be depreciated, but that his merits should obtain far more than their proper meed of recognition. It seems to be forgotten that what was best in his physics he borrowed from others, and that what he added was of less than no value; that he was ignorant or careless of demonstrated truths; that his avowed principles of belief were inconsistent with any truth rising above the level of vulgar apprehension; and finally, that in his system scientific interests were utterly subordinated to practical interests.

In the face of such facts, to say, as Mr. Froude does, that Epicureanism was ‘the creed of the men of science’ in the time of Julius Caesar[111]—an assertion directly contradicted by Lange[112]—is perhaps only of a piece with Mr. Froude’s usual inaccuracy when writing about ancient history; but such declarations as that of Mr. Frederic Pollock, that the Epicurean system ‘was a genuine attempt at a scientific explanation of the world; and was in its day the solitary protest against the contempt of physics which prevailed in the other post-Aristotelian schools;’[113] of Prof. Trezza, that the Epicurean school ‘summed up in itself the most scientific elements of Greek antiquity;’[114] of Dr. Woltjer, that ‘with respect to the laws and principles of science, the Epicureans came nearest of all the ancients to the science of our own time;’[115] and finally, of M. Ernest Renan, that Epicureanism was ‘the great scientific school of antiquity,’[116] are absolutely amazing. The eminent French critic just quoted has elsewhere observed, with perfect justice, that the scientific spirit is the negation of the supernatural; and perhaps he argues that the negation of the supernatural must, reciprocally, be the scientific spirit. But this is only true when such a negation is arrived at inductively, after a disinterested survey of the facts. Epicurus started with the denial of supernatural interference as a practical postulate, and then hunted about for whatever explanations of natural phenomena would suit his foregone conclusion. Moreover, an enquirer really animated by the scientific spirit studies the facts for their own sake; he studies them as they actually are, not resting content with alternative explanations; and he studies them to the fullest extent of which his powers are capable. Epicurus, on the contrary, declares that physics would not be worth attending to if the mind could be set free from religious terrors in any other manner;[117] he will not let himself be tied down to any one theory if there are others equally inconsistent with divine agency to be had;[118] and when his demands in this respect are satisfied, that is, when the appearances vulgarly ascribed to supernatural causation have been provided with natural causes, he leaves off.

To get rid of superstitious beliefs was, no doubt, a highly meritorious achievement, but it had been far more effectually performed by the great pre-Socratic thinkers, Heracleitus, Empedocles, Anaxagoras, and Democritus. These men or their followers had, besides, got hold of a most important principle—the vital principle of all science—which was the reign of law, the universality and indefeasibility of physical causation. Now, Epicurus expressly refused to accept such a doctrine, declaring that it was even worse than believing in the gods, since they could be propitiated, whereas fate could not.[119] Again, Greek physical philosophy, under the guidance of Plato, had been tending more and more to seek for its foundation in mathematics. Mathematical reasoning was seen to be the type of all demonstration; and the best hopes of progress were staked on the extension of mathematical methods to every field of enquiry in turn. How much might be done by following up this clue was quickly seen not only in the triumphs of geometry, but in the brilliant astronomical discoveries by which the shape of the earth, the phases of the moon, and the cause of eclipses were finally cleared up and placed altogether outside the sphere of conjecture. Nor was a knowledge of these truths confined to specialists: they were familiar alike to the older Academy, to the Peripatetic, and to the Stoic schools; so that, with the exception of those who doubted every proposition, we may assume them to have been then, as now, the common property of all educated men. Epicurus, on the other hand, seems to have known nothing of mathematics, or only enough to dispute their validity, for we are told that his disciple Polyaenus, who had previously been eminent in that department, was persuaded, on joining the school, to reject the whole of geometry as untrue;[120] while, in astronomy, he pronounced the heavenly bodies to be no larger than they appear to our senses, denied the existence of Antipodes, and put the crudest guesses of early philosophy on the same footing with the best-authenticated results of later observation. It is no wonder, then, that during the whole continuance of his school no man of science ever accepted its teaching, with the single exception of Asclepiades, who was perhaps a Democritean rather than a disciple of the Garden, and who, at any rate, as a physiologist, would not be brought into contact with its more flagrant absurdities.

In order to understand how so vigorous an intellect could go so wildly astray, we must glance at his personal history, and at the manner in which his system seems to have been gradually built up.

II.

Epicurus was born 341 B.C., about the same time as Zeno the Stoic. Unlike all the other philosophers of his age, he was of Athenian parentage; that is to say, he belonged to a race of exclusively practical tendencies, and marked by a singular inaptitude or distaste for physical enquiries. His father, a poor colonist in Samos, was, apparently, not able to give him a very regular education. At eighteen he was sent to Athens, but was shortly afterwards obliged to rejoin his family, who were driven from Samos in 322, along with the other Athenian settlers, by a political revolution, and had taken refuge in Colophon, on the Asiatic coast. In the course of his wanderings, the future philosopher came across some public lecturers, who seem to have instructed him in the physics of Democritus, and perhaps also in the scepticism of Pyrrho; but of such a steady discipline as Plato passed through during his ten years’ intercourse with Socrates, Aristotle during his twenty years’ studies under Plato, and Zeno during his similarly protracted attendance at the various schools of Athens, there is no trace whatever. Epicurus always described himself as self-taught, meaning that his knowledge had been acquired by reading instead of by listening; and we find in him the advantages as well as the defects common to self-taught men in all ages—considerable freshness and freedom from scholastic prejudices, along with a certain narrowness of sympathies, incompleteness of information, inaptitude for abstract reasoning, and last, but not least, an enormous opinion of his own abilities, joined to an overweening contempt for those with whose opinions he did not agree. After teaching for some time in Mitylênê, Epicurus established himself as the head of a school in Athens, where he bought a house and garden. In the latter he lectured and gathered round him a band of devoted friends, among whom women were included, and who were wont to assemble for purposes of social recreation not less than of philosophic discipline. Just before his death, which occurred in the year 270, he declared in a letter to his friend and destined successor Hermarchus, that the recollection of his philosophical achievements had been such a source of pleasure as to overcome the agonies of disease, and to make the last day the happiest of his life.[121] For the rest, Epicurus secluded himself, on principle, from the world, and few echoes of his teaching seem to have passed beyond the circle of his immediate adherents. Thus, whatever opportunities might otherwise have offered themselves of profiting by adverse criticism were completely lost.[122]

Epicureanism was essentially a practical philosophy. The physical, theological, and logical portions of the system were reasoned out with exclusive reference to its ethical end, and their absolute subordination to it was never allowed to be forgotten. It is therefore with the moral theory of Epicurus that we must begin.

From the time of Socrates on, the majority of Greeks, had they been asked what was the ultimate object of endeavour, or what made life worth living, would have answered, pleasure. But among professional philosophers such a definition of the supreme good met with little favour. Seeing very clearly that the standard of conduct must be social, and convinced that it must at the same time include the highest good of the individual, they found it impossible to believe that the two could be reconciled by encouraging each citizen in the unrestricted pursuit of his own private gratifications. Nor had such an idea as the greatest happiness of the greatest number ever risen above their horizon; although, from the necessities of life itself, they unconsciously assumed it in all their political discussions. The desire for pleasure was, however, too powerful a motive to be safely disregarded. Accordingly we find Socrates frequently appealing to it when no other argument was likely to be equally efficacious, Plato striving to make the private satisfaction of his citizens coincide with the demands of public duty, and Aristotle maintaining that this coincidence must spontaneously result from the consolidation of moral habits; the true test of a virtuous disposition being, in his opinion, the pleasure which accompanies its exercise. One of the companions of Socrates, Aristippus the Cyrenaean, a man who had cut himself loose from every political and domestic obligation, and who was remarkable for the versatility with which he adapted himself to the most varying circumstances, went still further. He boldly declared that pleasure was the sole end worth seeking, and on the strength of this doctrine came forward as the founder of a new philosophical school. According to his system, the summum bonum was not the total amount of enjoyment secured in a lifetime, but the greatest single enjoyment that could be secured at any moment; and this principle was associated with an idealistic theory of perception, apparently suggested by Protagoras, but carrying his views much further. Our knowledge, said Aristippus, is strictly limited to phenomena; we are conscious of nothing beyond our own feelings; and we have no right to assume the existence of any objects by which they are caused. The study of natural science is therefore waste of time; our whole energies should be devoted to the interests of practical life.[123] Thus Greek humanism seemed to have found its appropriate sequel in hedonism, which, as an ethical theory, might quote in its favour both the dictates of immediate feeling and the sanction of public opinion.