On the other side, the division of the circles from the center to the extremities, being harmoniously appropriated to the essence of the soul, the one knows existing things and establishes harmony between them, because it is itself composed of harmonious elements. The circle of what is changeable engenders opinion by its regular movements; but the circle of that which is always the same produces knowledge.
Plato lays down two primary causes or principles of all things: God and matter, which he also calls mind and the cause. And he defines matter as something without shape and without limitation, and says that from it all concretions arise. He affirms also that as it was moving about at random, it was brought by God into one settled place, as God thought order better than disorder; and that this nature is divided into four elements—fire, water, air, and earth—of which the world itself and everything in it was made. But he says that the earth is the only thing that is unchangeable, as he considers the cause to be the difference of the figures of which it is composed; for he says that the figures of the others are homogeneous, for that they are all composed equally of scalene triangles. The figure of the earth, however, is peculiar to itself; for the element of fire is a pyramid; of air, an octagon; of water, an eicosagon; and of the earth, a cube; owing to which these things cannot be changed into earth, nor earth into them. He teaches also that these elements are not separated so as to occupy each a peculiar and distinct place; for the spherical motion collects and compresses all the small things towards the center, and the small things separate the great ones, on which account the species, as they change, do also change their positions.
Moreover he asserts that the world is one, and has been produced, since it has been made by God, in such a manner as to be an object of sensation. And he considers it endowed with life, because that which is so endowed is superior to that which is not, and it must be the production of the most excellent producer. It is also one and illimitable, because the model after which it was made was one; and it is spherical, because its creator was of that form; for it also contains all other animals, and God who made it comprises all forms. And it is smooth, and has no instruments whatever all round it, because it has no need of any. But the whole world remains imperishable, because it cannot be resolved into God; and God is the cause of universal production, because it is the nature of the good to be productive of good; and the best is the cause of the production of the heaven, for the best of all productions can have no other cause than the best of all intelligible existences. And since God is of that character, and since heaven resembles the best, inasmuch as it is at least the most beautiful of all things, it cannot be like anything else that is produced, except God.
He also teaches that the world consists of fire, water, air, and earth: of fire, in order that it may be visible; of earth, in order that it may be firm; of water and air, that it may not be destitute of proportion; for two middle terms are indispensable to keep the solid bodies in due proportion to one another, and to realize the unity of the whole. In short, the world is formed of all the elements together, in order that it may be perfect and imperishable.
Again, time is the image of eternity; eternity subsists forever, but the motion of the heaven is time; for day, and night, and the months, and all such divisions, are parts of time, on which account there could be no such thing as time apart from the nature of the world; for time existed contemporaneously and simultaneously with the world. And it was with reference to time that the sun, and the moon, and the planets were made; and it was in order that the number of the seasons might be manifest, and that the animals might partake of number, that God kindled the light of the sun; and that the moon was above the circle of the earth, and that the sun was next to it, and in the still higher circles were the planets. And that the universe was animated, because it was altogether bound up in animated motion, and that the race of all other animals was produced in order that the world might be made perfect, and resembling an animal such as could be comprehended by intellect. Since then God had life, the heaven also must have life; and the Gods are to a great extent composed of fire. And there are three other races of animals: those which fly in the air, those which live in the water, those which walk in the earth. The oldest of all the deities in heaven is the Earth; she was formed in order to be the dispenser of night and day; and as she is placed in the center, she is constantly in motion around the center.
And since there are two efficient causes, some things must, he says, be affirmed to exist in consequence of intellect, and some from some necessary cause. Now necessary causes are the air, fire, earth, and water, these not being real elements, but rather receptacles; and they too are formed of triangles in combination, and are resolvable into triangles; and their elements are the scalene triangle and the isosceles. These two before-mentioned elements are the principles and causes of things, of which the models are God and matter, which last must necessarily be destitute of form, as is the case of other receptacles. And that the cause of these things was a necessary cause, which, receiving the ideas, produced the substances, and was moved by the dissimilarity of its own power, and again by its motion compelled those things which were moved by it to move other things in their turn.
But all these things were formerly moved without any reason or order; but after they began to form the world by their combination, they then received symmetry and regularity from God, according to the principles applicable to them; for the efficient causes, even before the creation of the heaven, were two in number. There was also a third, namely production; but these were not very evident, but rather traces than actual things, and quite devoid of regularity. But after the world was made, then they too assumed a regular form and arrangement; but the heaven was made of all existing bodies. And Plato considers that God is incorporeal just as the soul is, and that it is owing to that that he is not affected by any destruction or external circumstances. And ideas, as we have said before, he defines as certain causes and principles, owing to which it is that such and such things are by nature what they are.
On the subject of good and evil, these were his sentiments: that the end was to become like God; and that virtue was sufficient of herself for happiness, but nevertheless required the advantages of the body as instruments to work with: such as health, strength, the integrity of the senses, and things of that kind; and also external advantages, such as riches, and noble birth, and glory. Still that the wise man would be not the less happy, even if destitute of these auxiliary circumstances, for he would enjoy the constitution of his country, and would marry, and would not transgress the established laws, and that he would legislate for his country, as well as he could under existing circumstances, unless he saw affairs in an unmanageable condition, in consequence of the excessive factiousness of the people. He thinks too that the Gods superintend all the affairs of men, and that there are such beings as daemons. And he was the first person who defined the notion of the honorable, as that which borders on the praiseworthy, and the logical, and the useful, and the becoming, and the expedient, all which things are combined with that which is suitable to, and in accordance with, nature.
He also discussed in his dialogues the correctness of terms, so that he was the first person who reduced the science of giving correct answers, and putting correct questions to a system, which he himself used to satiety.
In his dialogues he used to speak of justice as a kind of law of God, as being of influence sufficient to excite men to act justly, in order to avoid suffering punishment as malefactors after death. Owing to which he appeared to some people rather fond of mythical stories, as he mingled stories of this kind with his writings, in order by the uncertainty of all the circumstances that affect men after their death, to induce them to abstain from evil actions. And these were his opinions.
He used too, says Aristotle, to divide things in this manner: Of good, some have their place in the mind, some in the body, and some are wholly external. As, for instance, justice, and prudence, and manly courage, and temperance, and qualities of that sort exist in the soul. Beauty, and a good constitution, and health, and strength exist in the body. But friends, and the prosperity of one’s country, and wealth, are external goods. There are then three species of goods, some in the soul, some in the body, and some external to either.
There are also three species of friendship: For one kind is natural, another that which arises from companionship, and the third is that which is produced by ties of hospitality. We call that natural friendship which parents feel towards their offspring, and relations towards one another; and this is partaken of by other animals besides men. We call that the friendship of companionship which arises from a habit of association, and which has no reference to ties of blood, such as the friendship of Pylades for Orestes. That which arises from ties of hospitality is one which owes its origin to agreements, and which is carried on by means of letters between strangers. There is, therefore, natural friendship, and friendship between companions, and between strangers. Some also add a fourth kind, namely, the friendship of love.
Of political constitutions there are five species: There is one kind which is democratical, a second which is aristocratical, a third is oligarchical, a fourth monarchical, and the fifth is tyrannical. Now, the democratical form of constitution exists in those cities in which the multitude has the chief power, and elects magistrates, and passes laws at its own pleasure. But an aristocracy is that form in which neither the rich, nor the poor, nor the most illustrious men of the city rule, but the most nobly born have the chief sway. And oligarchy is that constitution in which the magistracies are distributed according to some sort of rating: for the rich are fewer in number than the poor. The monarchical constitution is either dependent on law or on family. That in Carthage depends on law; that in Lacaedemon and Macedonia on family, for they select their sovereign out of some particular family. But a tyranny is that kind of government in which the people are either cajoled or constrained into being governed by a single individual. Forms of government then, are divided into democracy, aristocracy, oligarchy, monarchy, and tyranny.
Again, of justice there are three species: For there is one kind which is conversant with the gods; a second which has reference to men; and a third, which concerns the dead. For they who sacrifice according to the laws, and who pay due respect to the temples, are manifestly pious to the gods. And those who repay what has been lent to them, and restore what has been deposited with them, act justly as to men. And those who pay due respect to the tombs, clearly are pious towards the dead. There is, therefore, one justice towards the Gods, a second towards men, and a third towards the dead.
In the same way, there are also three species of knowledge: There is one kind which is practical, a second which is productive, a third which is theoretical. For the science of building houses or ships is production; for one can see the work which is produced by it. Political science, and the science of playing the flute, or the harp, or such things as that, is practical; for one cannot see any visible result which has been produced by them, and yet they are doing something. For one man plays the flute or plays the harp, and another occupies himself with state affairs. Again, geometrical, and harmonic, and astronomical science are all theoretical; for they do nothing, and produce nothing. But the geometrician theorizes as to what relation lines bear to one another, and the harmonist speculates about sounds, and the astronomer about stars and about the world. Accordingly, of sciences some are theoretical, others productive, and a third species is practical.
Of medical science there are five species: one, pharmaceutical; a second, manual; a third, conversant about the regulation of the manner of life and the diet; a fourth, the business of which is to detect diseases; and the fifth is remedial. The pharmaceutical relieves infirmities by means of medicines; the manual heals men by cutting and cauterizing; the one which attends to the diet gets rid of diseases by altering and regulating the diet; the fourth produces its effects by a thorough comprehension of the nature of the disease; and the last relieves men from suffering by bringing prompt assistance at the moment. Medical science, then, is divided into the pharmaceutical, the manual, the dietetic, the diagnostic, and the remedial.
Of law there are two divisions: For there is a written and an unwritten law. The one by which we regulate our constitutions in our cities is the written law; that which arises from custom is the unwritten law. As, for instance, for a man to come naked into the marketplace or to wear woman’s clothes, are actions which are not prohibited by any law, and yet we never do them because they are forbidden by the unwritten law. Law, therefore, is divided into the written and the unwritten law.
Discourse is divided into five heads, one of which heads is that which statesmen employ when they speak in the public assemblies; and this is called political. Another division is that which orators use in their written harangues, and bring forward for the sake of display in panegyrics or reproaches, or impeachments. And such a description of discourse as this is the rhetorical. A third class is that which private individuals use when conversing with one another. This is called private discourse. Another kind is that which is employed when men converse by means of putting short questions and giving brief answers to those who question them. This is called the dialectic kind of discourse. The fifth division is that which artists adopt when conversing on their own particular art, and this is called professional discourse. Thus discourse, then, is divided into political, rhetorical, private, dialectic, and professional.
Music again is divided into three species: For there is the music of the mouth alone, such as song; secondly, there is the music which is performed by the hands and mouth together, such as singing to the harp; thirdly, there is that which is executed by the hands alone, such as harp playing. Music, therefore, is divided into music of the mouth, music of the mouth and hands, and music of the hands.
Nobleness of birth is divided into four species: the first is when one’s ancestors are noble, and valiant, and just; in which case they say that their posterity are nobly born. The second kind is when one’s ancestors have been princes and rulers of nations, and their posterity also we call noble. Another kind is when one’s ancestors have been distinguished for personal renown, such, for instance, as is gained by generalship or by victory at the games. For their offspring also we address as nobly born. And the last kind is when a man is himself noble in his spirit, and magnanimous. For that man also we call noble, and this is the last kind of nobility. There is, therefore, nobility arising from virtuous ancestors, from royal ancestors, from illustrious ancestors, and from one’s own excellent qualities.
Beauty also is divided into three kinds: For there is one kind which is praiseworthy, as that of a beautiful face. Another which is useful, as an instrument or a house, and things of that kind which are beautiful, with reference to our use of them. There is also a beauty with reference to laws, and habits, and things of that kind, which is likewise beautiful, because of its utility. So that beauty again is looked at in three ways, with reference to its praise, its utility, and to our use of it.
The soul is divided into three parts: for one part of it is capable of reason, another is influenced by appetite, the third part is liable to passion. Of these the reasoning part is the cause of deliberating, and reasoning, and understanding, and everything of that kind. The appetite part is that portion of the soul which is the cause of desiring to eat, and to embrace and things of that kind. The passionate part is the cause of men feeling confidence and delight, and grief and anger. The soul therefore is divided into the reasoning part, the appetitive part, and the passionate part.
Of perfect virtue there are four species: One is prudence, one is justice, the third is manly gallantry, and the fourth is temperance. Of these, prudence is the cause of a man acting rightly in affairs; justice is the cause of his acting justly in partnerships and bargains; manly gallantry is the cause of a man’s not being alarmed amid dangers and formidable circumstances, but standing firm; and temperance is the cause of his subduing his appetites, and being enslaved by no pleasure, but living decorously. So that virtue is divided into prudence, justice, manly gallantry, and temperance.
Rule is divided into five parts: One is rule according to law; another is rule according to nature; a third kind is rule according to custom; a fourth division is rule with reference to family; the fifth is rule by force. Now when the rulers in cities are elected by the citizens, then they rule according to law; those who rule according to nature are the males, not only among men, but also among all other animals, for everywhere we shall find it as a general rule that the male rules the female; the rule of him who rules according to custom is such as this, when schoolmasters rule their pupils, and teachers their disciples. Rule according to family is that which prevails in places like Lacedaemon, where hereditary sovereigns reign. For the kingdom there belongs to a certain family; and in Macedonia they rule on the same principle. For there, too, the kingdom depends on family. But those who rule by force, only cajoling the citizens, rule in spite of them; and such a sway is called rule by force. So that there is rule by law, and by nature, and by custom, and by family, and by force.
Of rhetoric he speaks of six species: For when orators exhort the people to make war upon or to form alliances against anyone, this species of oratory is called exhortation. When they persuade the people not to make war, or to form alliances, but to keep quiet, this kind of rhetoric is called dissuasion. The third species of rhetoric, is when anyone says that he has been injured by someone else, and impeaches that person as guilty of many crimes; for this species is called accusation. The fourth kind of rhetoric is called defense, when a man shows that he has done no wrong, and that he is not guilty of anything out of the way. Such a kind of speech they call a defense. The fifth species of rhetoric, is when anyone speaks well of another, and shows him to be virtuous and honorable; and this kind is called encomium. The sixth species, is when anyone shows that another person is worthless; and this kind is called blame. So that rhetoric is divided into encomium and blame, exhortation and dissuasion, accusation and defense.