Платон: Philebus

The Greek conception of the infinite would be more truly described, in our way of speaking, as the indefinite. To us, the notion of infinity is subsequent rather than prior to the finite, expressing not absolute vacancy or negation, but only the removal of limit or restraint, which we suppose to exist not before but after we have already set bounds to thought and matter, and divided them after their kinds. From different points of view, either the finite or infinite may be looked upon respectively both as positive and negative (compare 'Omnis determinatio est negatio')' and the conception of the one determines that of the other. The Greeks and the moderns seem to be nearly at the opposite poles in their manner of regarding them. And both are surprised when they make the discovery, as Plato has done in the Sophist, how large an element negation forms in the framework of their thoughts.

2, 3. The finite element which mingles with and regulates the infinite is best expressed to us by the word 'law.' It is that which measures all things and assigns to them their limit; which preserves them in their natural state, and brings them within the sphere of human cognition. This is described by the terms harmony, health, order, perfection, and the like. All things, in as far as they are good, even pleasures, which are for the most part indefinite, partake of this element. We should be wrong in attributing to Plato the conception of laws of nature derived from observation and experiment. And yet he has as intense a conviction as any modern philosopher that nature does not proceed by chance. But observing that the wonderful construction of number and figure, which he had within himself, and which seemed to be prior to himself, explained a part of the phenomena of the external world, he extended their principles to the whole, finding in them the true type both of human life and of the order of nature.

Two other points may be noticed respecting the third class. First, that Plato seems to be unconscious of any interval or chasm which separates the finite from the infinite. The one is in various ways and degrees working in the other. Hence he has implicitly answered the difficulty with which he started, of how the one could remain one and yet be divided among many individuals, or 'how ideas could be in and out of themselves,' and the like. Secondly, that in this mixed class we find the idea of beauty. Good, when exhibited under the aspect of measure or symmetry, becomes beauty. And if we translate his language into corresponding modern terms, we shall not be far wrong in saying that here, as well as in the Republic, Plato conceives beauty under the idea of proportion.

4. Last and highest in the list of principles or elements is the cause of the union of the finite and infinite, to which Plato ascribes the order of the world. Reasoning from man to the universe, he argues that as there is a mind in the one, there must be a mind in the other, which he identifies with the royal mind of Zeus. This is the first cause of which 'our ancestors spoke,' as he says, appealing to tradition, in the Philebus as well as in the Timaeus. The 'one and many' is also supposed to have been revealed by tradition. For the mythical element has not altogether disappeared.

Some characteristic differences may here be noted, which distinguish the ancient from the modern mode of conceiving God.

a. To Plato, the idea of God or mind is both personal and impersonal. Nor in ascribing, as appears to us, both these attributes to him, and in speaking of God both in the masculine and neuter gender, did he seem to himself inconsistent. For the difference between the personal and impersonal was not marked to him as to ourselves. We make a fundamental distinction between a thing and a person, while to Plato, by the help of various intermediate abstractions, such as end, good, cause, they appear almost to meet in one, or to be two aspects of the same. Hence, without any reconciliation or even remark, in the Republic he speaks at one time of God or Gods, and at another time of the Good. So in the Phaedrus he seems to pass unconsciously from the concrete to the abstract conception of the Ideas in the same dialogue. Nor in the Philebus is he careful to show in what relation the idea of the divine mind stands to the supreme principle of measure.

b. Again, to us there is a strongly-marked distinction between a first cause and a final cause. And we should commonly identify a first cause with God, and the final cause with the world, which is His work. But Plato, though not a Pantheist, and very far from confounding God with the world, tends to identify the first with the final cause. The cause of the union of the finite and infinite might be described as a higher law; the final measure which is the highest expression of the good may also be described as the supreme law. Both these conceptions are realized chiefly by the help of the material world; and therefore when we pass into the sphere of ideas can hardly be distinguished.

The four principles are required for the determination of the relative places of pleasure and wisdom. Plato has been saying that we should proceed by regular steps from the one to the many. Accordingly, before assigning the precedence either to good or pleasure, he must first find out and arrange in order the general principles of things. Mind is ascertained to be akin to the nature of the cause, while pleasure is found in the infinite or indefinite class. We may now proceed to divide pleasure and knowledge after their kinds.

III. 1. Plato speaks of pleasure as indefinite, as relative, as a generation, and in all these points of view as in a category distinct from good. For again we must repeat, that to the Greek 'the good is of the nature of the finite,' and, like virtue, either is, or is nearly allied to, knowledge. The modern philosopher would remark that the indefinite is equally real with the definite. Health and mental qualities are in the concrete undefined; they are nevertheless real goods, and Plato rightly regards them as falling under the finite class. Again, we are able to define objects or ideas, not in so far as they are in the mind, but in so far as they are manifested externally, and can therefore be reduced to rule and measure. And if we adopt the test of definiteness, the pleasures of the body are more capable of being defined than any other pleasures. As in art and knowledge generally, we proceed from without inwards, beginning with facts of sense, and passing to the more ideal conceptions of mental pleasure, happiness, and the like.

2. Pleasure is depreciated as relative, while good is exalted as absolute. But this distinction seems to arise from an unfair mode of regarding them; the abstract idea of the one is compared with the concrete experience of the other. For all pleasure and all knowledge may be viewed either abstracted from the mind, or in relation to the mind (compare Aristot. Nic. Ethics). The first is an idea only, which may be conceived as absolute and unchangeable, and then the abstract idea of pleasure will be equally unchangeable with that of knowledge. But when we come to view either as phenomena of consciousness, the same defects are for the most part incident to both of them. Our hold upon them is equally transient and uncertain; the mind cannot be always in a state of intellectual tension, any more than capable of feeling pleasure always. The knowledge which is at one time clear and distinct, at another seems to fade away, just as the pleasure of health after sickness, or of eating after hunger, soon passes into a neutral state of unconsciousness and indifference. Change and alternation are necessary for the mind as well as for the body; and in this is to be acknowledged, not an element of evil, but rather a law of nature. The chief difference between subjective pleasure and subjective knowledge in respect of permanence is that the latter, when our feeble faculties are able to grasp it, still conveys to us an idea of unchangeableness which cannot be got rid of.