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The Nocturnal Council is to consist of the priests who have obtained the rewards of virtue, of the ten eldest guardians of the law, and of the director and ex-directors of education; each of whom is to select for approval a younger coadjutor. To this council the 'Spectator,' who is sent to visit foreign countries, has to make his report. It is not an administrative body, but an assembly of sages who are to make legislation their study. Plato is not altogether disinclined to changes in the law where experience shows them to be necessary; but he is also anxious that the original spirit of the constitution should never be lost sight of.
The Laws of Plato contain the latest phase of his philosophy, showing in many respects an advance, and in others a decline, in his views of life and the world. His Theory of Ideas in the next generation passed into one of Numbers, the nature of which we gather chiefly from the Metaphysics of Aristotle. Of the speculative side of this theory there are no traces in the Laws, but doubtless Plato found the practical value which he attributed to arithmetic greatly confirmed by the possibility of applying number and measure to the revolution of the heavens, and to the regulation of human life. In the return to a doctrine of numbers there is a retrogression rather than an advance; for the most barren logical abstraction is of a higher nature than number and figure. Philosophy fades away into the distance; in the Laws it is confined to the members of the Nocturnal Council. The speculative truth which was the food of the guardians in the Republic, is for the majority of the citizens to be superseded by practical virtues. The law, which is the expression of mind written down, takes the place of the living word of the philosopher. (Compare the contrast of Phaedrus, and Laws; also the plays on the words nous, nomos, nou dianome; and the discussion in the Statesman of the difference between the personal rule of a king and the impersonal reign of law.) The State is based on virtue and religion rather than on knowledge; and virtue is no longer identified with knowledge, being of the commoner sort, and spoken of in the sense generally understood. Yet there are many traces of advance as well as retrogression in the Laws of Plato. The attempt to reconcile the ideal with actual life is an advance; to 'have brought philosophy down from heaven to earth,' is a praise which may be claimed for him as well as for his master Socrates. And the members of the Nocturnal Council are to continue students of the 'one in many' and of the nature of God. Education is the last word with which Plato supposes the theory of the Laws to end and the reality to begin.
Plato's increasing appreciation of the difficulties of human affairs, and of the element of chance which so largely influences them, is an indication not of a narrower, but of a maturer mind, which had become more conversant with realities. Nor can we fairly attribute any want of originality to him, because he has borrowed many of his provisions from Sparta and Athens. Laws and institutions grow out of habits and customs; and they have 'better opinion, better confirmation,' if they have come down from antiquity and are not mere literary inventions. Plato would have been the first to acknowledge that the Book of Laws was not the creation of his fancy, but a collection of enactments which had been devised by inspired legislators, like Minos, Lycurgus, and Solon, to meet the actual needs of men, and had been approved by time and experience.
In order to do justice therefore to the design of the work, it is necessary to examine how far it rests on an historical foundation and coincides with the actual laws of Sparta and Athens. The consideration of the historical aspect of the Laws has been reserved for this place. In working out the comparison the writer has been greatly assisted by the excellent essays of C.F. Hermann ('De vestigiis institutorum veterum, imprimis Atticorum, per Platonis de Legibus libros indagandis,' and 'Juris domestici et familiaris apud Platonem in Legibus cum veteris Graeciae inque primis Athenarum institutis comparatio': Marburg, 1836), and by J.B. Telfy's 'Corpus Juris Attici' (Leipzig, 1868).
The Laws of Plato are essentially Greek: unlike Xenophon's Cyropaedia, they contain nothing foreign or oriental. Their aim is to reconstruct the work of the great lawgivers of Hellas in a literary form. They partake both of an Athenian and a Spartan character. Some of them too are derived from Crete, and are appropriately transferred to a Cretan colony. But of Crete so little is known to us, that although, as Montesquieu (Esprit des Lois) remarks, 'the Laws of Crete are the original of those of Sparta and the Laws of Plato the correction of these latter,' there is only one point, viz. the common meals, in which they can be compared. Most of Plato's provisions resemble the laws and customs which prevailed in these three states (especially in the two former), and which the personifying instinct of the Greeks attributed to Minos, Lycurgus, and Solon. A very few particulars may have been borrowed from Zaleucus (Cic. de Legibus), and Charondas, who is said to have first made laws against perjury (Arist. Pol.) and to have forbidden credit (Stob. Florileg., Gaisford). Some enactments are Plato's own, and were suggested by his experience of defects in the Athenian and other Greek states. The Laws also contain many lesser provisions, which are not found in the ordinary codes of nations, because they cannot be properly defined, and are therefore better left to custom and common sense. 'The greater part of the work,' as Aristotle remarks (Pol.), 'is taken up with laws': yet this is not wholly true, and applies to the latter rather than to the first half of it. The book rests on an ethical and religious foundation: the actual laws begin with a hymn of praise in honour of the soul. And the same lofty aspiration after the good is perpetually recurring, especially in Books X, XI, XII, and whenever Plato's mind is filled with his highest themes. In prefixing to most of his laws a prooemium he has two ends in view, to persuade and also to threaten. They are to have the sanction of laws and the effect of sermons. And Plato's 'Book of Laws,' if described in the language of modern philosophy, may be said to be as much an ethical and educational, as a political or legal treatise.
But although the Laws partake both of an Athenian and a Spartan character, the elements which are borrowed from either state are necessarily very different, because the character and origin of the two governments themselves differed so widely. Sparta was the more ancient and primitive: Athens was suited to the wants of a later stage of society. The relation of the two states to the Laws may be conceived in this manner:—The foundation and ground-plan of the work are more Spartan, while the superstructure and details are more Athenian. At Athens the laws were written down and were voluminous; more than a thousand fragments of them have been collected by Telfy. Like the Roman or English law, they contained innumerable particulars. Those of them which regulated daily life were familiarly known to the Athenians; for every citizen was his own lawyer, and also a judge, who decided the rights of his fellow-citizens according to the laws, often after hearing speeches from the parties interested or from their advocates. It is to Rome and not to Athens that the invention of law, in the modern sense of the term, is commonly ascribed. But it must be remembered that long before the times of the Twelve Tables (B.C. 451), regular courts and forms of law had existed at Athens and probably in the Greek colonies. And we may reasonably suppose, though without any express proof of the fact, that many Roman institutions and customs, like Latin literature and mythology, were partly derived from Hellas and had imperceptibly drifted from one shore of the Ionian Sea to the other (compare especially the constitutions of Servius Tullius and of Solon).