=83.= In expounding his system Zeno made much use of the syllogism, thereby laying the foundations of a new style of oratory, consisting of short and pointed clauses, which became a characteristic of his school[80]. He no doubt regarded this form as a sure method of attaining truth; but even at the present day the principle that truth can only be reached from facts and not from words is not everywhere admitted. The syllogisms of Zeno have all their weak points, and as a rule the term which is common to the major and minor premisses suffers a shift of meaning. These syllogisms can no longer convince us, and even in antiquity they were severely criticized. But they are excellent aids to the memory, and so serve the same end as the catechisms of the Reformation period. Amongst the syllogisms attributed to Zeno are these: ‘That which has reason is better than that which has not reason; but nothing is better than the universe; therefore the universe has reason[81].’ ‘No one trusts a secret to a drunken man; but one trusts a secret to a good man; therefore a good man will not be drunken[82].’ ‘No evil is accompanied by glory; but death is accompanied by glory; therefore death is no evil[83].’ Such syllogisms were embedded in the numerous works of Zeno, of which many were certainly extant as late as the time of Epictetus[84]. [Sidenote: Epicurus and Arcesilaus.] =84.= At the very time when Zeno was elaborating the doctrines of the Porch, another school of equal eminence was established at Athens by EPICURUS (341-270 B.C.) in his Gardens. Epicurus combined the ethical principle of the Cyrenaics, that pleasure is the end of life, with the atomistic philosophy of Democritus; he had no respect for the study of dialectic, but placed the criterion of truth in the observations of the senses, leaving little room for the participation of mind or will. Thus in every part of philosophy his teaching was opposed to that of Zeno, and the two schools during their whole existence were in the sharpest conflict. We may nevertheless notice some points of contact between them. Both founded, or conceived that they founded their ethical doctrine upon physical proofs; that is, both maintained that the end of life which they put forward was that prescribed by natural law. As a consequence, they agreed in removing the barrier which Socrates had set up against the pursuit of natural science. Both again were positive teachers, or (in the language of the ancients) propounders of dogmas; and here they came into conflict with the Academic school, which maintained, and was soon about to emphasize, the critical spirit of Socrates and Plato. For in the last years of Zeno’s life his old fellow-pupil Arcesilaus became head of the Academic school (270 B.C.), and at once directed his teaching against Zeno’s theory of knowledge[85]. Following the practice of Socrates and of Plato’s dialogues, he argued against every point of view presented,