Following the ideas of the
Old Academy, Zeno divided
philosophy into three parts:
logic (a wide subject including
rhetoric,
grammar, and the theories of
perception and
thought);
physics (not just
science, but the
divine nature of the universe as well); and
ethics, the end goal of which was to achieve
eudaimonia through the right way of living according to Nature. Because Zeno's ideas were later expanded upon by
Chrysippus and other Stoics, it can be difficult to determine precisely what he thought. But his general views can be outlined as follows: ,
Plato,
Pythagoras,
Aristotle & Zeno by
François Pouqueville Logic In his treatment of logic, Zeno was influenced by
Stilpo and the other
Megarians. Zeno urged the need to lay down a basis for logic because the wise person must know how to avoid deception.
Cicero accused Zeno of being inferior to his philosophical predecessors in his treatment of logic, and it seems true that a more exact treatment of the subject was laid down by his successors, including
Chrysippus. Zeno divided true conceptions into the comprehensible and the incomprehensible, permitting for free-will the power of assent (
sinkatathesis/συνκατάθεσις) in distinguishing between sense impressions. Zeno said that there were four stages in the process leading to true
knowledge, which he illustrated with the example of the flat, extended hand, and the gradual closing of the fist: Zeno stretched out his fingers, and showed the palm of his hand, – "Perception," – he said, – "is a thing like this."– Then, when he had closed his fingers a little, – "Assent is like this." – Afterwards, when he had completely closed his hand, and showed his fist, that, he said, was Comprehension. From which simile he also gave that state a new name, calling it
katalepsis (κατάληψις). But when he brought his left hand against his right, and with it took a firm and tight hold of his fist: – "Knowledge" – he said, was of that character; and that was what none but a wise person possessed.
Physics The
universe, in Zeno's view, is
God: a divine reasoning entity, where all the parts belong to the whole. Into this
pantheistic system he incorporated the physics of
Heraclitus; the universe contains a divine artisan-fire, which foresees everything, and extending throughout the universe, must produce everything: Zeno, then, defines nature by saying that it is artistically working fire, which advances by fixed methods to creation. For he maintains that it is the main function of art to create and produce and that what the hand accomplishes in the productions of the arts we employ, is accomplished much more artistically by nature, that is, as I said, by artistically working fire, which is the master of the other arts. is the basis for all activity in the universe, operating on otherwise passive matter, which neither increases nor diminishes itself. The primary substance in the universe comes from fire, passes through the stage of air, and then becomes water: the thicker portion becoming earth, and the thinner portion becoming air again, and then rarefying back into fire. Individual
souls are part of the same fire as the
world-soul of the universe. Following Heraclitus, Zeno adopted the view that the universe underwent regular cycles of formation and destruction. The nature of the universe is such that it accomplishes what is right and prevents the opposite, and is identified with unconditional
Fate, while allowing it the free-will attributed to it.
Ethics '' Like the
Cynics, Zeno recognised a single, sole and simple good, which is the only goal to strive for. "Happiness is a good flow of life," said Zeno, and this can only be achieved through the use of right reason coinciding with the universal reason (
Logos), which governs everything. A bad feeling (
pathos) "is a disturbance of the mind repugnant to reason, and against Nature." This consistency of soul, out of which morally good actions spring, is
virtue, true good can only consist in virtue. Zeno deviated from the Cynics in saying that things that are morally
adiaphora (indifferent) could nevertheless have value. Things have a relative value in proportion to how they aid the natural instinct for self-preservation. That which is to be preferred is a "fitting action" (
kathêkon/καθῆκον), a designation Zeno first introduced. Self-preservation, and the things that contribute towards it, has only a conditional value; it does not aid happiness, which depends only on moral actions. Just as virtue can only exist within the dominion of reason, so
vice can only exist with the rejection of reason. Virtue is absolutely opposed to vice, the two cannot exist in the same thing together, and cannot be increased or decreased; no one moral action is more virtuous than another. All actions are either good or bad, since impulses and desires rest upon free consent, and hence even passive mental states or emotions that are not guided by reason are immoral, and produce immoral actions. Zeno distinguished four negative
emotions: desire, fear, pleasure and sorrow (
epithumia, phobos, hêdonê, lupê / ἐπιθυμία, φόβος, ἡδονή, λύπη), and he was probably responsible for distinguishing the three corresponding positive emotions: will, caution, and joy (
boulêsis, eulabeia, chara / βούλησις, εὐλάβεια, χαρά), with no corresponding rational equivalent for pain. All errors must be rooted out, not merely set aside, and replaced with right reason. ==Works==