Epicurean and Stoic ethical theories are part of more comprehensive philosophical systems that began life as the Hellenistic philosophical schools. The Hellenistic age is a period of Greek intellectual and social history usually dated from the death of Alexander the Great in 323 BCE (Aristotle died in 322) to Octavian's defeat of Anthony and Cleopatra at Actium in 31 BCE. This period roughly begins with Macedonian rule and ends with the more or less complete incorporation of Greece into the Roman Empire.
Philosophy during this period is characterized by three main schools of thought: Epicureanism, Stoicism, and Skepticism; most of the philosophical work done in this period is within one of these three schools. The founders of these schools literally established schools -- educational institutions -- that survived for many years and that perpetuated the doctrines of the school. These schools constructed systematic treatments of logic (e.g. semantics and epistemology), physics (e.g. natural philosophy and metaphysics), and ethics (including politics). These systematic theories were articulated against the background of earlier Greek philosophy -- the Pre-Socratics, Socrates, Plato, and Aristotle-- and of the other schools, sometimes borrowing from, sometimes criticizing, this background. Subsequent thinkers in each school developed their views both against this background and against that of the founders of the School. All three schools, but especially Stoicism and Skepticism, outlived the Hellenistic age and received important articulation by Roman intellectuals.
It may help to fix the major figures in each Greco-Roman tradition. Among the Epicureans were Epicurus (341-270 BCE), Colotes (4th and 3rd centuries BCE), Lucretius (1st century BCE). Among the Stoics were Zeno (of Citium) (335-263 BCE), Cleanthes (331-232 BCE), Chrysippus (@ 280-207 BCE), Epictetus (@ 55-135 AD). And among the Skeptics were Pyrrho (@ 365-270 BCE), Carneades (@ 214-128 BCE), Sextus Empiricus (@ 200 AD).
Our evidence about the views of these schools, especially of the founders of these schools, is quite fragmentary. Though many of the figures in these traditions (e.g. Epicurus and Chrysippus) wrote quite a bit, little of that work survives intact. Most of our evidence consists of small quotes (sometimes out of context) and paraphrases by later writers, who often write out of a school opposed to that of the author they're quoting or summarizing. The most complete sources are quite late: the Roman Lucretius (the Epicurean) in his poem, On the Nature of the Universe, the Roman philosopher Cicero (106-43 BCE) in many commentaries on the Hellenistic schools, and Sextus Empiricus (the skeptic) with his account of skepticism and his criticisms of opposing schools.
EPICUREAN HEDONISM
The Epicureans are hedonists (e.g. De Fin i 54), who appeal to what
we naturally pursue and shun (De Fin i 30, ii 31; Hellenistic Philosophy
21A2-3, 21B2). Torquatus, Cicero's Epicurean spokesman, describes
the commitment this way.
... [A]s soon as every animal is born, it seeks after pleasure and rejoices in it as the greatest good, while it rejects pain as the greatest bad and, as far as possible, avoids it; and it does this while it is not yet corrupted, while the judgment of nature herself is unperverted and sound. Therefore, he says that there is no need of reason or debate about why pleasure is to be pursued and pain avoided. He thinks that these things are perceived, as we perceive that fire is hot ..., none of which needs confirmation by elaborate arguments; it is enough to point them out [De Fin. i 30; 21A2-3].They recognize that some painful things are pursued as good, and some pleasurable things are avoided as bad. However, they follow Socrates in Plato's Protagoras and argue that "bad pleasures" are those that cause greater pain in the long run and that "good pains" are those that prevent greater sufferings in the long run (De Fin i 32-3; 21A5, B3).
KATASTEMATIC PLEASURE
It might seem obvious what pleasure and pain are (De Fin ii 6, 12-17,
19-20). We would normally identify pleasure with a certain positive
or agreeable sensation or feeling and pain with a certain negative or disagreeable
sensation or feeling and conclude that there are intermediate, neutral
states that involve freedom from both pain and pleasure (De Fin ii 6-7,
16, 19-20). But the Epicureans recognize katastematic pleasure
(freedom from pain is a pleasure) in addition to kinetic pleasure
(the positive sensation is a pleasure). Indeed, Epicurus seems to
think that freedom from pain is the greatest kind of pleasure (De Fin i
37-38, ii 9-11, 17; 21A6-7, 21Q).
So Epicurus did not think that there was some intermediate state between pleasure and pain; for that state which some people think is an intermediate state, viz. the absence of all pain, is not only a pleasure but is even the greatest pleasure [De Fin i 38; 21A7].Why should we accept the doctrine of katastematic pleasures?
Sometimes they seem to think that the removal of pain is itself a source of pleasure (De Fin i 37).
Another possible rationale for the Epicurean claims about katastematic pleasures applies the initial argument for hedonism to katastematic pleasures (cf. De Fin i 56, ii 31-). That argument, I said, appeals to our natural judgments and preferences and what we naturally pursue. Because I prefer the intermediate state to pain and pursue the former rather than the latter, it must be a good. But, first, this claim won't support the superiority of katastematic pleasures; as long as I prefer the positive state to the intermediate state, as it is surely natural to do, the katastematic pleasure must be a lesser good than the kinetic pleasure, contrary to the Epicurean view. However, the Epicurean might claim that, all else being equal, we pursue freedom from pain more ardently than we do kinetic pleasure. Perhaps I'm more eager to get rid of intense pains than I am to experience intense pleasures. But surely, this must remain an empirical issue and so is hard to square with their assertion of the categorical superiority of katastematic pleasure. Moreover, this seems to be a bad argument for even the weaker claim that katastematic pleasure is a (lesser) good; comparative preference does not support noncomparative value. This should be clear from the fact that the same appeal to preferences would show that an evil that is smaller than another one is actually a good.
Epicureans might also appeal to adaptive considerations to support the doctrine of katastematic pleasure. The Epicureans recognize control as a constraint on eudaimonia (De Fin i 63, ii 86-87). A life of intense pleasures, like an expansive conception of happiness, might seem to require large amounts of external goods (e-goods). But e-goods are not fully within our control. When they are lost and intense desires are frustrated, this produces intense pain. Even when e-goods are not lost and the associated desires are eventually satisfied, their vulnerability still produces anxiety and pain that offsets these pleasures. Because our desires are malleable and we can modify the sources of our pleasure, control supports a policy of adapting our desires to our resources (De Fin ii 90-91; 21B4-5). In this way, they might argue, only a tranquil life -- free of intense desires and kinetic pleasures -- can maximize net kinetic pleasure. But whereas control may justify some adaptation of desires, it's hard to believe that we are most likely to maximize net kinetic pleasure by aiming at the neutral state (cf. De Fin ii 90-91). Moreover, this argument would defend tranquility as a strategy for maximizing net kinetic pleasure, not the intrinsic value of katastematic pleasures.
THE HEDONIST GOAL OF EPICUREAN PHILOSOPHY
The Epicureans see the main aim of philosophy as confronting and removing
the fear of death (KD 11-12; 25B). They think that Greek myths about
highly anthropomorphic gods, in particular, those describing the retribution
of the gods cause us to fear death and an afterlife (23A4-5). We
should distinguish between two forms the fear of death might take: (a)
taking death as an appropriate object of regret and (b) preoccupation with
death. The Epicureans may have been most concerned with (b) but they
attacked (b) by attacking (a). Different claims would serve Epicurean
purposes.
AGAINST DIVINE INTERFERENCE
Most Epicureans are not atheists (23B2, B3, E2); instead, they argue
against divine interference. Unlike Aristotle, they do not recognize
natural teleology.
INVULNERABILITY
The Epicureans also argue that we are invulnerable to harm. Our
reconstruction of these arguments is somewhat complicated by Epicurean
ambivalence about immortality. Sometimes they seem to claim that
a soul is essentially part of a larger compound and, therefore, cannot
survive the destruction of the bodily part of the compound (14F2-3, G).
At other times, they seem to claim that when the body perishes, the larger
compound breaks up, but the smaller compound -- the soul -- can continue
to exist. However, when the soul separates from the body, it loses
its perceptual and sensory capacities, because these depend upon the capacities
of a body (14A3-6, G, 24A1). On this account, the Epicureans believe
that an insensate soul survives death.
The Epicureans can allow that dying might be bad, if it is painful; they argue only that death is not bad. One puzzle is what is wrong with killing someone (painlessly) if death is not bad.
THE EXISTENCE REQUIREMENT
The first argument assumes that one does cease to exist when the body
perishes and appeals to an existence requirement (24A4, E5).
Moreover, death is not just impersonally bad; it can be bad for me, not because bad things happen to me in death, but because death prevents me from realizing goods. I harmed by death, not after death, because of lost goods. If so, this blocks the inference from (3) to (4).
DEATH IS PAINLESS
Epicureans also think that death is not bad, even if one's soul survives
death, because a disembodied soul experiences no pain (De Fin ii 100).
Now consider a katastemmatic reading of (1). (3) is plausible, but this threatens to make death the highest good.
The many sometimes shun death as the greatest of evils, but at other times choose it as a release from life's <evils. But the wise man neither deprecates living> nor fears not living. ... Much worse, however, is he who says `It's a fine thing never to be born. Or, once born, to pass through the gates of Hades with the utmost speed` [Letter to Menoeceus 124-27/24A 6,8].And, of course, this argument is only as compelling as the doctrine of katastematic pleasures on which it rests.
THE SYMMETRY ARGUMENT
The Epicureans think that we should assimilate our attitude toward
death to our attitude toward prenatal nonexistence (De Fin i 49).
Lucretius states this Symmetry Argument most clearly.
From all this it follows that death is nothing to us and no concern of ours, since our tenure of the mind is mortal. In days of old, we felt no disquiet when the hosts of Carthage poured into battle on every side when the whole earth, dizzied by the convulsive shock of war, reeled sickeningly under the high ethereal vault, and between realm and realm the empire of mankind by land and sea trembled in the balance. So, when we shall be no more -- when the union of body and spirit that engenders us has been disrupted -- to us, who shall then be nothing, nothing by any hazard will happen any more at all. Nothing will have power to stir our sense, not though earth be fused with sea and sea with sky [DRN iii 830 51/24E1-2].Later, he expresses the same appeal to symmetry.
Look back again to see how the immense expanse of past time, before we were born, has been nothing to us. Nature shows us that it is the mirror image of the time that is to come after we are dead. Is anything there terrifying, does anything there seem gloomy? Is it not more peaceful than any sleep? [DRN iii 972 77]The Symmetry Argument has something like this structure
HEDONISM AND VIRTUE
Hedonism would seem to imply that conventional virtues can have only
instrumental value. The Epicureans recognize and accept this consequence
of hedonism (KD 33-36; De Fin i 47-53, ii 78-85; 22A, B, M). Torquatus
says
Hence justice cannot correctly be said to be desirable in and for itself; it is so because it is so highly productive of gratification [De Fin i 53].Epicureans want to insist that a sensible strategy for pursuing my own pleasure requires moderation.
So when we say that pleasure is the goal we do not mean pleasures of the profligate or the pleasures of consumption ... but rather lack of pain in the body and disturbance in the soul. For it is not drinking bouts and continuous partying and enjoying boys and women, or consuming fish and other dainties of an extravagant table, which produce the pleasant life, but sober calculation which searches out the reasons for every choice and avoidance and drives out the opinions which are the source of the greatest turmoil for men's souls [Letter to Menoeceus/21B5].One line of argument appeals to the superior value of katastematic "pleasure" to defend the greater value of the ascetic life as compared with the "tumultuous life" of the person who has a great deal of kinetic pleasure (e.g. fish). This argument will be only as plausible as the doctrine of katastematic pleasures.
Another line of argument appeals only on kinetic pleasure and the adaptive argument we have already. This argument is better. But even if itworks for apparently self-confined virtues, such as moderation, why should the enlightened hedonist be concerned with the happiness (pleasure) of others, as justice requires?
JUSTICE
The Epicureans offer an account of the origin and nature of justice
in terms of mutually beneficial norms of social interaction, which is reminiscent
of the account of justice provided by Glaucon and Adeimantus in Republic
ii (358e-359b).
Justice was never anything per se, but a contract, regularly arising at some place or other in people's dealings with one another, over not harming or being harmed [KD 33/22A3].
Taken generally, justice is the same for all, since it is something useful in people's social relationships [KD 36/22B1].On this view, one benefits from another's justice but not from one's own. Though being just is not good in itself, it is a means to enjoying the benefits of other people's justice. If one could be confident that one's own injustice could go undetected, this would apparently be best; one would enjoy the benefits of the justice of others without the cost's of one's own. But the Epicureans think that the possibility that one's injustice will be detected, even if it goes unrealized, will create painful anxiety that outweighs the benefits of injustice (KD 34-35/22A4-5). They appear to reasons as follows.