The Republic is the longest of all the Platonic dialogues, except the dialogue De Legibus. It consists of ten books, each of them as long as any one of the dialogues which we have passed in review. Partly from its length — partly from its lofty pretensions as the great constructive work of Plato — I shall give little more than an abstract of it in the present chapter, and shall reserve remark and comment for the succeeding.
Declared theme of the Republic — Expansion and multiplication of the topics connected with it.
The professed subject is — What is Justice? Is the just man happy in or by reason of his justice? whatever consequences may befall him? Is the unjust man unhappy by reason of his injustice? But the ground actually travelled over by Sokrates, from whose mouth the exposition proceeds, is far more extensive than could have been anticipated from this announced problem. An immense variety of topics, belonging to man and society, is adverted to more or less fully. A theory of psychology or phrenology generally, is laid down and advocated: likewise a theory of the Intellect, distributed into its two branches: 1. Science, with the Platonic Forms or Ideas as Realities corresponding to it; 2. Opinion, with the fluctuating semi-realities or pseudo-realities, which form its object. A sovereign rule, exercised by philosophy, is asserted as indispensable to human happiness. The fundamental conditions of a good society, as Plato conceived it, are set forth at considerable length, and contrasted with the social corruptions of various existing forms of government. The outline of a perfect education, intellectual and emotional, is drawn up and prescribed for the ruling class: with many accompanying remarks on the objectionable tendencies of the popular and consecrated poems. The post-existence, as well as the pre-existence of the soul, is affirmed in the concluding books. As the result of the whole, Plato emphatically proclaims his conviction, that the just man is happy in and through his justice, quite apart from all consideration of consequences — yet that the consequences also will be such as to add to his happiness, both during life as well as after death: and the unjust man unhappy in and through his injustice.[1]
[1] Plat. Repub. i. pp. 328 A, 350 D, 354 A.
The dramatic introduction of the dialogue (which is described as held during the summer, immediately after the festival of the Bendideia in Peiræus), with the picture of the aged Kephalus and his views upon old age, is among the richest and most spirited in the Platonic works: but the discussion does not properly begin until Kephalus retires, leaving it to be carried on by Sokrates with Polemarchus, Glaukon, Adeimantus, and Thrasymachus.
Views of Kephalus about old age.
“Old age has its advantages to reasonable men (says Kephalus). If I have lost the pleasures of youth, I have at the same time lost the violent desires which then overmastered me. I now enjoy tranquillity and peace. Without doubt, this is in part owing to my wealth. But the best that wealth does for me is, that it enables me to make compensation for deceptions and injustice, practised on other men in my younger days — and to fulfil all vows made to the Gods. An old man who is too poor to render such atonement for past falsehood and injustice, becomes uneasy in his mind as death approaches; he begins to fear that the stories about Hades, which he has heard and ridiculed in his youth, may perhaps prove true.”[2]
[2] Plato, Repub. i. pp. 330-331.
Compare the language of Cato, more rhetorical and exaggerated than that of Kephalus, in Cic. De Senect. c. 13-14.