PHI 1101 Lecture Notes - Lecture 14: Psychological Egoism, Glaucon, Thrasymachus

• School: University of Ottawa
• Department: Philosophy
• Course: PHI 1101
• Professor: Mark Brown

Document Summary

Plate recognizes two worlds that exist: world of forms. Each person deserves a form of justice. Justice is something that is understood intellectually: world of senses. 1st definition of justice speaking the truth and paying whatever debs one has incurred (cephalus) 2nd definition of justice it is just to harm unjust people and benefit just ones. It is just to harm one"s enemies and unjust to harm one"s friends (polemarchus) 3rd definition of justice what is advantageous for the established rule. Since the established rule is surely stronger, anyone who does the rational calculation correctly will conclude that the just in the same everywhere-what is advantageous for the stronger (thrasymachus) Glaucon says that most people place justice in the 3rd category. Psychological egoism when people think/act only in their own interests. Socrates there is a sense of justice that belongs to a single man and one tht belongs to a whole city (or state)