On the Final Good [Peri Telous] - (Epicurus - lost)
On Just Action [Peri Dikaiopragias] - (Epicurus - lost)
On Living [Peri Biou] - (Epicurus - lost)
On Rhetoric [Peri Rehtorikehs] - (Epicurus - lost)
On the Nature of the Universe - (Lucretius)
Epistles (letters) -
Letter to Herodotus - (Epicurus - DL, Physics)
Letter to Pythocles - (Epicurus - DL, Meteorology)
Letter to Menoeceus - (Epicurus - DL, Ethics and Theology)
Aphorisms - Principal Doctrines [Kuriai Doxai] - (Epicurus - DL)
Epistemology: Dogmatic Empiricism
Dogmatic (Skepticism is self-refuting)
Empirical:
Sensations [aisthesis] are the foundation of all knowledge
Representationalism -
Material objects continuously give off copies of themselves in the form of fine clusters of atoms [eidola]
Material representations strike the sensory organs causing sense-impressions [phantasia]. Sensory impressions can be either
i. Clear - uninterfered with, or
ii. Unclear - interfered with
Repeated exposure to sensations causes concepts [prolepsei] to form in the mind
Knowledge arises with the interaction of sense-impressions and concepts
note: Epicurean Epistemology rests on two axioms:
Clear sense perceptions provide accurate data about external objects and their properties
Judgements about non-sensible objects are true if they are consistent with clear sense perceptions.
Direct Mental Apprehension - some ultra-fine atomic clusters [tenuia simulacra] bypass the senses and directly affect the mind causing concepts
Dreams
Ghosts
Gods
Metaphysics: Atomistic Materialism
Three Basic Suppositions:
Nothing comes from Nothing.
Something cannot be destroyed into Nothing.
The Universe cannot be different than it is.
Basic Substance:
Atoms (minute particles of matter) which make Bodies
indestructible
infinite in number
distinct in shape (though not infinitely so)
divisible into "minima" (ultimately small, indivisible, particles)
Void (emptiness, the lack of matter)
Motion:
Generally Downward (caused by the weight of the atoms)
Occasionally atoms "Swerve" (Indeterminism)
The Universe: is composed of bodies which are random compounds of atoms and void (no teleological organization)
The Gods: sublimely happy, immortal beings
note: Epicurus directly attacks the traditional notion of the gods as the
teleological intelligence behind the universe and the affairs of humans. Thus,
he opposes not only popular religion, but also the cosmology of Plato and
Aristotle who both held that some divine principle controlled the movements of
celestial bodies as well as guided the fate of human beings (either directly or
indirectly). His argument against divine control of, or intervention in, the
universe rests on the notion of impassibility which is, he thinks, an essential
element of being divine.
Epicurus' argument for the existence of gods: Consensus Omnium
Epicurus' argument for non-interaction with the Universe: Happiness = Tranquility
Ethics: Hedonistic Consequentialism
Pleasure is the Highest Good:
Pain - A disturbance of the natural state of one's being
Pleasure - A natural state of order (which gives rise to tranquility)
Kinetic Pleasure - satisfying or overcoming some pain
Static Pleasure - the complete absence of pain
The Goal of Life is Living Undisturbed (Atarachia) - Tranqulity
Definition:
tarache
atarachia
Tranquility of Body:
Eliminate hunger
Eliminate disease
Tranquility of Mind:
Eliminate fear of the gods
Eliminate fear of death
note: Epicurus does not reject virtue as part of human happiness, but it is only
instrumentally valuable. Justice and Friendship are virtues as they aid in
attaining a peaceful existence. However, Epicurus rejects the idea that humans
are necessarily or essentially politically (contra Plato and Aristotle). In
fact, he holds political involvement to be a prime cause of tarache.