Thus in a succession of characters Plato represents the successive stages of morality, beginning with the Athenian gentleman of the olden time, who is followed by the practical man of that day regulating his life by proverbs and saws; to him succeeds the wild generalization of the Sophists, and lastly come the young disciples of the great teacher, who know the sophistical arguments but will not be convinced by them, and desire to go deeper into the nature of things. These too, like Cephalus, Polemarchus, Thrasymachus, are clearly distinguished from one another. Neither in the Republic, nor in any other Dialogue of Plato, is a single character repeated.
The delineation of Socrates in the Republic is not wholly consistent. In the first book we have more of the real Socrates, such as he is depicted in the Memorabilia of Xenophon, in the earliest Dialogues of Plato, and in the Apology. He is ironical, provoking, questioning, the old enemy of the Sophists, ready to put on the mask of Silenus as well as to argue seriously. But in the sixth book his enmity towards the Sophists abates; he acknowledges that they are the representatives rather than the corrupters of the world. He also becomes more dogmatic and constructive, passing beyond the range either of the political or the speculative ideas of the real Socrates. In one passage Plato himself seems to intimate that the time had now come for Socrates, who had passed his whole life in philosophy, to give his own opinion and not to be always repeating the notions of other men. There is no evidence that either the idea of good or the conception of a perfect state were comprehended in the Socratic teaching, though he certainly dwelt on the nature of the universal and of final causes (cp. Xen. Mem.; Phaedo); and a deep thinker like him, in his thirty or forty years of public teaching, could hardly have failed to touch on the nature of family relations, for which there is also some positive evidence in the Memorabilia (Mem.) The Socratic method is nominally retained; and every inference is either put into the mouth of the respondent or represented as the common discovery of him and Socrates. But any one can see that this is a mere form, of which the affectation grows wearisome as the work advances. The method of enquiry has passed into a method of teaching in which by the help of interlocutors the same thesis is looked at from various points of view. The nature of the process is truly characterized by Glaucon, when he describes himself as a companion who is not good for much in an investigation, but can see what he is shown, and may, perhaps, give the answer to a question more fluently than another.
Neither can we be absolutely certain that Socrates himself taught the immortality of the soul, which is unknown to his disciple Glaucon in the Republic (cp. Apol.); nor is there any reason to suppose that he used myths or revelations of another world as a vehicle of instruction, or that he would have banished poetry or have denounced the Greek mythology. His favorite oath is retained, and a slight mention is made of the daemonium, or internal sign, which is alluded to by Socrates as a phenomenon peculiar to himself. A real element of Socratic teaching, which is more prominent in the Republic than in any of the other Dialogues of Plato, is the use of example and illustration (Greek): 'Let us apply the test of common instances.' 'You,' says Adeimantus, ironically, in the sixth book, 'are so unaccustomed to speak in images.' And this use of examples or images, though truly Socratic in origin, is enlarged by the genius of Plato into the form of an allegory or parable, which embodies in the concrete what has been already described, or is about to be described, in the abstract. Thus the figure of the cave in Book VII is a recapitulation of the divisions of knowledge in Book VI. The composite animal in Book IX is an allegory of the parts of the soul. The noble captain and the ship and the true pilot in Book VI are a figure of the relation of the people to the philosophers in the State which has been described. Other figures, such as the dog, or the marriage of the portionless maiden, or the drones and wasps in the eighth and ninth books, also form links of connexion in long passages, or are used to recall previous discussions.
Plato is most true to the character of his master when he describes him as 'not of this world.' And with this representation of him the ideal state and the other paradoxes of the Republic are quite in accordance, though they cannot be shown to have been speculations of Socrates. To him, as to other great teachers both philosophical and religious, when they looked upward, the world seemed to be the embodiment of error and evil. The common sense of mankind has revolted against this view, or has only partially admitted it. And even in Socrates himself the sterner judgement of the multitude at times passes into a sort of ironical pity or love. Men in general are incapable of philosophy, and are therefore at enmity with the philosopher; but their misunderstanding of him is unavoidable: for they have never seen him as he truly is in his own image; they are only acquainted with artificial systems possessing no native force of truth – words which admit of many applications. Their leaders have nothing to measure with, and are therefore ignorant of their own stature. But they are to be pitied or laughed at, not to be quarrelled with; they mean well with their nostrums, if they could only learn that they are cutting off a Hydra's head. This moderation towards those who are in error is one of the most characteristic features of Socrates in the Republic. In all the different representations of Socrates, whether of Xenophon or Plato, and amid the differences of the earlier or later Dialogues, he always retains the character of the unwearied and disinterested seeker after truth, without which he would have ceased to be Socrates.
Leaving the characters we may now analyse the contents of the Republic, and then proceed to consider (1) The general aspects of this Hellenic ideal of the State, (2) The modern lights in which the thoughts of Plato may be read.
BOOK I. The Republic opens with a truly Greek scene – a festival in honour of the goddess Bendis which is held in the Piraeus; to this is added the promise of an equestrian torch-race in the evening. The whole work is supposed to be recited by Socrates on the day after the festival to a small party, consisting of Critias, Timaeus, Hermocrates, and another; this we learn from the first words of the Timaeus.
When the rhetorical advantage of reciting the Dialogue has been gained, the attention is not distracted by any reference to the audience; nor is the reader further reminded of the extraordinary length of the narrative. Of the numerous company, three only take any serious part in the discussion; nor are we informed whether in the evening they went to the torch-race, or talked, as in the Symposium, through the night. The manner in which the conversation has arisen is described as follows: – Socrates and his companion Glaucon are about to leave the festival when they are detained by a message from Polemarchus, who speedily appears accompanied by Adeimantus, the brother of Glaucon, and with playful violence compels them to remain, promising them not only the torch-race, but the pleasure of conversation with the young, which to Socrates is a far greater attraction. They return to the house of Cephalus, Polemarchus' father, now in extreme old age, who is found sitting upon a cushioned seat crowned for a sacrifice. 'You should come to me oftener, Socrates, for I am too old to go to you; and at my time of life, having lost other pleasures, I care the more for conversation.' Socrates asks him what he thinks of age, to which the old man replies, that the sorrows and discontents of age are to be attributed to the tempers of men, and that age is a time of peace in which the tyranny of the passions