Plato’s Philosophy: Knowledge, Ethics, Society

Posted on Feb 16, 2025 in Philosophy and ethics

Plato’s Philosophy: Knowledge, Ethics, and Society

Knowledge

Dualism distinguishes two levels of knowledge:

Knowledge and Opinion

Plato distinguishes two forms of knowledge: knowledge and opinion.

  • Knowledge, Science, Episteme: Excludes the possibility of error. It is stable, firm, and based on reason. Knowledge is necessarily true and stable. Its object is ideas. It is achieved by reason.
    • A) The study of mathematics.
    • B) “Dialectic.”
  • Opinion, Belief, Doxa: May be wrong, insecure, and easy to change. It has no solid foundation. It is neither true nor stable. Its object is the physical or sensory world. It is achieved through the senses. Plato says, “Opinion is accompanied by sensation.” It is sensitive knowledge.

Doctrine of History or Reminiscence

This doctrine tries to approximate ideas and material beings. It aims to connect sensitive knowledge with rational knowledge. Anamnesis, “memory” in Greek. Plato explains this theory in his “Phaedrus,” where he explains that the soul lived in the world of ideas, where it knew everything, but fell to the sensible world. Due to sin, it forgets all its knowledge, leaving only a kind of remembrance of them.

Ethics and Eschatology

To release the soul from its prison, cleansing through virtue is necessary. Plato distinguishes three functions in the soul:

  • Wisdom for the rational (reason)
  • Strength for the irascible (mood)
  • Temperance for concupiscible (appetite)

He also distinguishes a fourth virtue, justice, which orders and harmonizes the other three. Virtue leads to happiness, which is a return to Plato’s world of ideas, i.e., the attainment of purification of the soul. When the body dies, the immortal soul is judged by a court, giving three possible outcomes:

  1. Totally purified souls: Go to the world of ideas, where they will be eternally happy.
  2. Souls started, but not totally purified: Go into a world where they will be absolutely happy.
  3. Souls without any purification: Go into a world where they will be punished.

After a while, the latter two options can choose a new reincarnation to purify themselves. This reincarnation may be as a philosopher (the best way to purify), a warrior, an animal (Plato says that this happens when one has suffered much in the previous life and prefers to live among animals than among men), or even a slave (the worst way to purify). Choosing wrong reincarnations is because, not being purified, vice and passions can only be rational. Before reincarnation, souls forget their former life. For Plato, all souls, sooner or later, return to the world of ideas.

Society and Politics

For Plato, the polis is where man develops. This moralizing and purifying entity intends to seek a perfect society. He defines the ideal as an organization that reflects the nature of man and society. Two principles:

  1. The wise should be the rulers.
  2. Everyone should fulfill their role.

Three Social Groups

Governments, producers, and soldiers. There will be justice if:

  • Rulers are wise.
  • Producers are moderate.
  • Soldiers are courageous.

Plato’s Model City: Radical

Total and absolute: “No private property, family, or children. Defectives are sacrificed. Philosophers are the most important class (future leaders). There are no written laws, and governance is by the judgment of rulers in each concrete case. Gender equality.” Everyone is in “The Republic” and later, in “Laws,” he permits the existence of family (with children) and introduces religion in education.

Education

Plato thinks the state’s purpose is to promote virtue and justice to achieve a happy life. He advocates intellectualism: happiness depends on virtue, and only knowledge is virtuous. Education is organized into two levels:

  • Primary: For everyone. It intends to educate the body, habits, and opinions, inculcating a concrete character.
  • Secondary: For future rulers (philosophers) from 20 to 35 years old. It investigates mathematics and then reaches dialectics.

Forms of Government

Plato arranges these cyclical forms of government from best to worst:

  • Monarchy: (Power in the hands of one) or Aristocracy (power in the hands of a select group).
  • Timocracy: Power in the hands of the military.
  • Oligarchy: Power in the hands of a few very rich people.
  • Democracy: Anarchy because the most inept rule.
  • Tyranny: Government without freedom.