Plato, the Republic and the theory of Forms
This page delivers no verdict; it presents claims and evidence with their sources. No theory in science is absolute. Method
For everyone
Plato argued that behind the changing world we perceive with the senses there are unchanging "Forms". He held that true knowledge is directed at these Forms, such as the Good and Justice themselves. In the Republic he used the allegory of the cave to describe people who take shadows for reality, and discussed how a just society could be built.
For specialists
In the middle dialogues (Phaedo, Republic, Symposium) Forms are presented as self-subsistent, indivisible and timeless beings in which sensible things "participate" (methexis). The distinction between knowledge (episteme) and opinion (doxa), the divided line and the doctrine of recollection (anamnesis) depend on this metaphysics. The Parmenides shows Plato himself raising objections to the theory of Forms, including the argument later called the "third man".
Views on dating
No single date is given because the date is not documented with certainty; the views of different sources are listed.
| Date of composition of the Republic | The exact date is unknown; it is usually placed between 380 and 370 BCE, in Plato's middle period.[2] |
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Claims
Positions
- Aristotle
- Forms cannot exist apart from things; if separate Forms are posited, an infinite series of Forms is needed to explain likeness (the third man argument).[3]
- al-Fārābī
- The virtuous city should be ruled by a leader uniting wisdom and prophecy; al-Fārābī drew on Plato's Republic for this political philosophy.[4]
Connections
Sources
- Book (2004). Republic. Hackett, Indianapolis
- EncyclopediaPlato. Stanford Encyclopedia of Philosophyplato.stanford.eduarchive
- EncyclopediaPlato's Middle Period Metaphysics and Epistemology. Stanford Encyclopedia of Philosophyplato.stanford.eduarchive
- Encyclopediaal-Farabi. Stanford Encyclopedia of Philosophyplato.stanford.eduarchive
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Cite this page
Athena contributors. (2026). Plato, the Republic and the theory of Forms. Athena: The tree of human knowledge. Retrieved November 1, 2026, from https://latifkedi.github.io/athena/en/d/platon/
@misc{athena_platon,
title = {Plato, the Republic and the theory of Forms},
author = {{Athena contributors}},
year = {2026},
howpublished = {\url{https://latifkedi.github.io/athena/en/d/platon/}},
note = {Athena: The tree of human knowledge. Accessed: 2026-11-01}
}Added: September 28, 2026 · Last changed: September 28, 2026 · Page history