Socrates' signature method for testing claims to knowledge.
Structure:
1. INTERLOCUTOR CLAIMS: "I know X" (e.g., "Virtue is knowledge")
│
▼
2. SOCRATES ELICITS: Additional beliefs B₁, B₂, B₃...
│
▼
3. SOCRATES DEMONSTRATES: B₁ + B₂ + B₃ → ~X
│
▼
4. APORIA: Puzzlement—must abandon X or some Bᵢ
│
▼
5. REFLECTION: What went wrong? What do I really believe?
Example (from Euthyphro):
Euthyphro: "Piety is what the gods love"
Socrates: "Do the gods sometimes disagree?"
Euthyphro: "Yes"
Socrates: "So the same thing would be both pious (loved by some gods)
and impious (hated by others)?"
Euthyphro: "That seems to follow..."
Socrates: "So your definition fails..."
Elenchus Principles
Principle
Description
Say what you believe
Don't argue for sport; stake your real views
Consistency requirement
Your beliefs must cohere
Follow the argument
Go where logic leads, even if uncomfortable
Intellectual humility
Admitting ignorance is progress
Examined life
Unexamined beliefs aren't worth holding
The Maieutic Method (Midwifery)
Socrates as "midwife of ideas"—helping others give birth to knowledge they already possess.
Assumptions:
Knowledge is latent (recollection from past lives in Platonic version)
The teacher doesn't implant knowledge but draws it out
Questions are more valuable than answers
Example (from Meno):
Socrates leads an uneducated slave boy to discover geometric truths
Through questions alone, the boy proves the Pythagorean theorem
Demonstrates that knowledge is recollection (anamnesis)
Platonic Philosophy
The Theory of Forms
Core Claim: Reality has two levels:
Sensible World: Changing, particular, perceived by senses
Intelligible World: Unchanging, universal, grasped by reason
The Forms (eide/ideai):
Perfect, eternal paradigms
What particulars "participate in" or "imitate"
Known through reason, not perception
Form
Particulars
Beauty itself
Beautiful things (sunsets, faces, art)
Justice itself
Just actions, laws, persons
Equality itself
Equal sticks, stones, numbers
The Good
All good things
Arguments for Forms
The Argument from Recollection (Phaedo):
P1: We have concepts of perfect equality, beauty, etc.
P2: We've never perceived anything perfectly equal, beautiful, etc.
P3: These concepts didn't come from sensory experience
C: We must have acquired them before birth (from direct acquaintance with Forms)
The Argument from Imperfection:
P1: All sensible things are imperfectly F (beautiful, equal, just...)
P2: We judge them as imperfect by comparison to a standard
P3: That standard must be perfectly F
C: There exists a perfect Form of F
The One-Over-Many Argument:
P1: Many things are F (many beautiful things)
P2: What makes them all F must be something they share
P3: What they share cannot be any particular F thing
C: There exists a Form of F that all F things participate in
The Allegory of the Cave (Republic VII)
JOURNEY OF THE SOUL
═══════════════════
Outside Cave (Sun = The Good)
↑
│ 4. Contemplation of Forms
│
Fire/Objects casting shadows
↑
│ 3. Mathematical reasoning
│
Shadows on wall
↑
│ 2. Belief about sensible things
│
Prisoners chained, watching shadows
│ 1. Imagination/illusion
═══════════════════
Interpretation:
Prisoners = Most humans, mistaking appearances for reality
Shadows = Sensory experience, opinions
Objects = Sensible things
Fire = The sun (source of sensible illumination)
Outside = Intelligible realm
Sun = The Form of the Good (source of all being and knowledge)
Externals are "indifferent" (preferred/dispreferred but not good/bad)
Emotions result from false judgments
The cosmos is rational (providential logos)
The Dichotomy of Control:
┌─────────────────────────────────────────┐
│ THINGS IN OUR CONTROL │
│ │
│ - Judgments │
│ - Impulses │
│ - Desires │
│ - Aversions │
│ │
│ → Focus here for tranquility │
├─────────────────────────────────────────┤
│ THINGS NOT IN OUR CONTROL │
│ │
│ - Body │
│ - Property │
│ - Reputation │
│ - Political power │
│ - Other people │
│ - Events │
│ │
│ → Accept these with equanimity │
└─────────────────────────────────────────┘
Stoic Psychology:
Assent (synkatathesis): Accepting an impression as true
Impulse (horme): Motivation to act
Passion (pathos): Excessive impulse from false judgment
The Stoic Sage:
Perfectly virtuous
Free from passions
Happy regardless of circumstances
Rare (perhaps never existed)
Epicureanism
Core Doctrines:
Pleasure is the highest good (hedone)
Pleasure = absence of pain (aponia) and mental disturbance (ataraxia)
The gods exist but don't intervene
Death is nothing to us (no afterlife)
The universe is atoms and void
Classification of Desires:
DESIRES
│
├── NATURAL
│ ├── Necessary (food, shelter, friendship)
│ │ → Fulfill these
│ └── Unnecessary (luxury foods, sex)
│ → Moderate these
│
└── VAIN (fame, wealth, power)
→ Eliminate these
The Tetrapharmakos (Four-Part Cure):
Don't fear the gods - They're indifferent to us
Don't fear death - Where I am, death is not; where death is, I am not
What is good is easy to get - Natural pleasures are simple
What is terrible is easy to endure - Pain is brief or bearable
Skepticism
Pyrrhonian Skepticism:
Suspend judgment (epoche) on all non-evident matters
For every argument, an equal counter-argument exists
Through suspension, achieve tranquility (ataraxia)
The Ten Modes of Skepticism:
Different animals have different sense experiences
Different humans have different sense experiences
Different senses give different information
Circumstances affect perception
Position and distance affect perception
Objects always perceived with admixture
Quantity and composition affect perception
Relativity in general
Frequency affects judgment
Different customs and laws
Key Greek Philosophical Vocabulary
Metaphysical Terms
Greek
Transliteration
Meaning
ὄν (ὄντος)
on (ontos)
Being
οὐσία
ousia
Substance, being, essence
εἶδος
eidos
Form, species, idea
ὕλη
hyle
Matter
μορφή
morphe
Shape, form
ἐνέργεια
energeia
Actuality, activity
δύναμις
dynamis
Potentiality, power
τέλος
telos
End, purpose, goal
ἀρχή
arche
Origin, principle, beginning
φύσις
physis
Nature
λόγος
logos
Reason, word, account
Ethical Terms
Greek
Transliteration
Meaning
ἀρετή
arete
Virtue, excellence
εὐδαιμονία
eudaimonia
Happiness, flourishing
φρόνησις
phronesis
Practical wisdom
σοφία
sophia
Theoretical wisdom
δικαιοσύνη
dikaiosyne
Justice
ἀνδρεία
andreia
Courage
σωφροσύνη
sophrosyne
Temperance, moderation
ἀπάθεια
apatheia
Freedom from passion (Stoic)
ἀταραξία
ataraxia
Tranquility (Epicurean/Skeptic)
ἡδονή
hedone
Pleasure
Epistemological Terms
Greek
Transliteration
Meaning
ἐπιστήμη
episteme
Knowledge, science
δόξα
doxa
Opinion, belief
ἀλήθεια
aletheia
Truth (literally "unconcealment")
νοῦς
nous
Mind, intellect
διάνοια
dianoia
Discursive thought
αἴσθησις
aisthesis
Sense perception
ἐποχή
epoche
Suspension of judgment
ἔλεγχος
elenchos
Refutation, testing
Central Debates
The Problem of Change (Heraclitus vs. Parmenides)
Heraclitus: Everything flows (panta rhei)
"You cannot step twice into the same river"
Unity of opposites
Logos as underlying order in change
Parmenides: Being is one, unchanging, eternal
Change is logically impossible
"What is, is; what is not, is not"
Plurality and motion are illusions
Resolutions:
Plato: Two worlds (changing appearances, unchanging Forms)
Aristotle: Change is transition from potentiality to actuality
Universals: Plato vs. Aristotle
Issue
Plato
Aristotle
Status of universals
Separate substances
In particulars only
Where are Forms?
Transcendent realm
Immanent in things
How known?
Recollection, dialectic
Abstraction from experience
Primary reality
Forms
Individual substances
Ethics: What is the Good Life?
School
The Good Life Is...
Because...
Socratic
Virtuous life
Virtue is knowledge; no one errs willingly
Platonic
Life of contemplation
Knowing the Good orders the soul
Aristotelian
Life of flourishing (eudaimonia)
Activity in accordance with virtue
Stoic
Life according to nature
Virtue is the only good
Epicurean
Life of measured pleasure
Pleasure is the natural end
Skeptic
Life of suspended judgment
Ataraxia through suspension
Knowledge: Rationalism vs. Empiricism
Rationalist Tendency (Plato):
True knowledge is of Forms
Sensory experience unreliable
Mathematics as paradigm
Knowledge is recollection
Empiricist Tendency (Aristotle):
Knowledge begins with perception
Forms known through abstraction
Natural science as paradigm
Experience grounds universals
Applying Greek Philosophy Today
Socratic Method in Practice
For Self-Examination:
Identify a belief you hold strongly
Ask: "What do I mean by X?"
Generate potential counterexamples
If counterexample works, revise the belief
Repeat until position is refined or abandoned
For Dialogue:
Ask genuinely (not rhetorically)
Seek the other's real views
Look for tensions in their position
Be willing to follow the argument
Aim at truth, not victory
Aristotelian Analysis
For Understanding Anything:
What is it made of? (Material cause)
What makes it what it is? (Formal cause)
What brought it about? (Efficient cause)
What is it for? (Final cause)
For Ethical Decision-Making:
What would the virtuous person do?
Where is the mean between extremes?
What does practical wisdom (phronesis) suggest?
Will this contribute to flourishing?
Stoic Exercises
Morning Meditation:
Preview potential challenges
Remind yourself what's in your control
Commit to responding virtuously
Evening Review:
What went well?
Where did I fail?
How can I improve?
Negative Visualization:
Imagine losing what you value
Cultivate gratitude
Reduce attachment
Epicurean Simplicity
Desire Audit:
List your desires
Classify: natural/necessary, natural/unnecessary, vain