Explain
โฆ.Platoโs Republic: that justice, the all-inclusive virtue, is always profitable, that is, โhappifyingโ. And injustice never isโฆ.
Platoโs point is that ๐ท๐๐๐๐ถ๐ฐ๐ฒ ๐บ๐ฎ๐ธ๐ฒ๐ ๐๐ ๐๐ฟ๐๐น๐ ๐ต๐ฎ๐ฝ๐ฝ๐ ๐ฏ๐ฒ๐ฐ๐ฎ๐๐๐ฒ ๐ถ๐ ๐ฝ๐๐๐ ๐ผ๐๐ฟ ๐๐ผ๐๐น ๐ถ๐ป ๐ผ๐ฟ๐ฑ๐ฒ๐ฟ.
Here, profitable means beneficial to the person, rather than financially rewarding. And happifying means producing genuine happiness or human flourishing, rather than simply giving us pleasant feelings.
In the Republic, Plato describes three parts of the soul:
๐ฅ๐ฒ๐ฎ๐๐ผ๐ป, which seeks truth and judges what is good.
๐ฆ๐ฝ๐ถ๐ฟ๐ถ๐, which expresses courage, ambition, and a sense of honor.
๐๐ฝ๐ฝ๐ฒ๐๐ถ๐๐ฒ, which desires food, sex, possessions, and other pleasures.
A just person has these working together properly: reason governs, spirit supports its judgments, and appetites accept appropriate limits. Justice is called all-inclusive here because it brings the whole person into harmony, with wisdom, courage, and moderation each doing their work.
๐๐ป๐ท๐๐๐๐ถ๐ฐ๐ฒ ๐ฑ๐ถ๐๐ฟ๐๐ฝ๐๐ ๐๐ต๐ฎ๐ ๐ต๐ฎ๐ฟ๐บ๐ผ๐ป๐. Someone who lies or cheats may gain money, power, or pleasure. But in gaining those things unjustly, he allows greed, fear, or ambition to govern him. His outward circumstances may improve while his inner life becomes worse.
Think of bodily health: something can taste good while harming your body. Likewise, an unjust act can feel satisfying while harming your character.
๐ฃ๐น๐ฎ๐๐ผ ๐ถ๐ ๐ป๐ผ๐ ๐ฝ๐ฟ๐ผ๐บ๐ถ๐๐ถ๐ป๐ด ๐๐ต๐ฎ๐ ๐ด๐ผ๐ผ๐ฑ ๐ฝ๐ฒ๐ผ๐ฝ๐น๐ฒ ๐๐ถ๐น๐น ๐ฎ๐น๐๐ฎ๐๐ ๐ต๐ฎ๐๐ฒ ๐ฒ๐ฎ๐๐ถ๐ฒ๐ฟ ๐น๐ถ๐๐ฒ๐. He is arguing that justice is always better for the soul, even when it costs us something, and that the rewards of injustice cannot make injustice itself good for us.