Dialogues · Chapter
Parmenides explained
In this dialogue, Socrates, then a young man, encounters the Eleatic philosopher Parmenides and his student Zeno.
What happens
In this dialogue, Socrates, then a young man, encounters the Eleatic philosopher Parmenides and his student Zeno. Zeno reads a treatise arguing that if being is many, it leads to contradictions. Socrates criticizes Zeno's arguments and introduces his own theory of Forms. Parmenides then subjects Socrates' theory of Forms to a rigorous critique, questioning the scope of Forms, the manner in which particulars participate in them, and the epistemological implications. The dialogue culminates in a complex exercise in dialectic, where Parmenides demonstrates a method of hypothesis and deduction regarding the One and the Many.
Themes in this chapter
Knowledge and Ignorance
Parmenides questions whether Forms can be known by humans, raising the 'third man' argument and the problem of participation.
The Soul and Immortality
The discussion of Forms and their relation to particulars touches on the nature of reality and the soul's access to true being.
Characters to notice
- Socrates
Appears as a young philosopher who presents and defends the theory of Forms against Parmenides' criticisms.
- Parmenides
The venerable Eleatic philosopher who critically examines Socrates' theory of Forms and leads the dialectical exercise.
- Zeno
Parmenides' student, who reads a treatise arguing against plurality and is questioned by Socrates.
- Aristotle
Mentioned as one of the companions present; later becomes a prominent philosopher.
Key passages
“If being is many, it must be both like and unlike, and this is impossible.”
Zeno argues that assuming the existence of many things leads to contradictory properties, thus plurality is an illusion.
Zeno's paradox of plurality, foundational to Eleatic monism.
“Do you think there are Forms of such things as man, fire, water?”
Parmenides asks Socrates whether the theory of Forms includes mundane objects, challenging the scope of the theory.
Parmenides' critique of the range of Forms, a key moment in the dialogue.
“Then if the one is, the one is both one and many, and also neither one nor many.”
Parmenides demonstrates that assuming the existence of the One leads to a series of contradictory conclusions.
The dialectical exercise on the hypothesis of the One, illustrating the method of Parmenides.