88. During the later years of his life Zeno gathered round him a number of men of practical and speculative capacity, not unworthy of comparison with the companions of Socrates. His death dissolved the immediate tie between them. Some took an active part in the work of government; others followed their teacher’s example, and became the founders of independent schools of thought; a few devoted themselves to strengthening and extending Zeno’s system; and many were doubtless engaged in useful employment of which no record has reached us. Zeno’s work had not yet been exposed to the test of time, and another century was to pass before it could be seen that the Stoic school was to be of permanent importance. Towards the schools of the Cynics, the Megarians, and the Academics, from which its principles were so largely derived, the attitude of the hearers of Zeno was that of a friendly interchange of opinions, in which sharp controversy stopped short of enmity; the followers of Aristotle (the Peripatetics) continued to be but slightly distinguished from the Academics. But all these schools appear to have united in opposition to the Cyrenaics and Epicureans; the champions of virtue could hold no communings with the advocates of pleasure. Individual teachers who practically reverted to Cynic or Academic teaching still called themselves Stoics: but the only one of Zeno’s hearers who adopted Cyrenaic views was contemptuously branded as ‘the deserter[1].’

Persaeus.

89. The most intimate companion[2] of Zeno was Persaeus of Citium (circ. 300-243 B.C.). He was the fellow-townsman of Zeno, and, as good authorities assert, at first his personal servant (οἰκέτης)[3] and afterwards his fellow-lodger. On the recommendation of Zeno he took service, together with Aratus the poet, with Antigonus Gonatas, king of Macedonia[4]. Here he was often twitted as to the Stoic paradoxes. King Antigonus sent him messengers announcing the loss of his wife, child, and property, and found that he was not entirely indifferent to external circumstances[5]. He adapted himself easily to court life, and is said to have written a treatise on the theory of the banquet, in which he did not rise above the moral standard of his neighbours[6]. Nor did he disdain to hoax Aristo of Chius, who held strongly to the paradox that ‘the wise man never opines’; he first sent him money by one of two twins, and then sent another to demand it back[7]. Another Socratic paradox, that ‘the wise man is sure to be a good general,’ he endeavoured to maintain by his personal example[8]. Antigonus placed him in command of the acropolis at Corinth, which was nevertheless taken by Aratus of Sicyon in 243 B.C. According to one account, Persaeus was wounded in the attack, and afterwards put to death by the conqueror[9]; others relate that he escaped to Cenchreae[10]. As a philosopher he is of little importance; but Cicero mentions that he not only maintained that amongst the gods were men raised to the sky for their services to mankind (which was an accepted Stoic doctrine), but also that objects useful to man had been deified[11].

Aratus.

90. Two other companions of Zeno also took service under Antigonus, apparently at the same time. Of these Philonides of Thebes[12] is otherwise unknown to us. The other was Aratus of Soli in Cilicia, author of the well-known poem The Phaenomena, an astronomical treatise afterwards translated into Latin by Cicero, and largely used by Virgil in his Georgics. The poems of Aratus had a wide influence, and were probably the source from which so many Stoic conceptions reached Virgil. The most interesting part for us is the Introduction, in which he interprets Zeus in Stoic fashion as the deity who dwells in sea and land, in markets and streets: whose family is mankind; and whose providence has set the stars in the heaven to regulate the seasons of the year and to be a guide to the farmer and the sailor[13]. The spirit of this poem is closely akin to that of the hymn of Cleanthes.

Sphaerus.

91. Still another hearer of Zeno took a prominent part in political life. Sphaerus from the Bosphorus (circ. 250 B.C.) was attracted to Cleomenes III, king of Sparta, who under his influence reintroduced the laws of Lycurgus in his city, and particularly those which referred to the education of the youth and the taking of meals in common[14]. With these he combined the plan of a monarchy after the Stoic model, in which the sovereign was to side with the poor against the rich[15]. But in 221 B.C. Cleomenes suffered a crushing defeat, and was compelled to take refuge with Ptolemy III (Euergetes), king of Egypt. Sphaerus found his way to the same court. The death of Ptolemy III left Cleomenes in the position of a disregarded suppliant[16]; but Sphaerus appears to have found a congenial home in Alexandria, now the centre of Hellenistic learning, and doubtless introduced the Stoic philosophy in the circle that gathered round the Museum[17]. He gained a special reputation by the excellence of his definitions[18]. From an anecdote related of him we must infer that whilst adhering to Zeno’s doctrine that the wise man will not opine, he accepted reasonable assurance (τὸ εὔλογον) as a sufficient guide in daily life[19]. He appears to have laid special stress upon the unity of virtue, maintaining that the separate virtues are but appearances of virtue or knowledge in different spheres of action[20].

Herillus.