Roman Stoicism being lectures on the history of the Stoic...

184. The third category is that of ‘disposition’ (πὼς ἔχοντα, res quodammodo se habens). It differs from quality in its variableness; for a brave man is always brave, and fire is always hot; but a man is sometimes standing, sometimes lying; fire is sometimes lambent, sometimes still. Qualities therefore appear to correspond generally to the συμβεβηκότα (coniuncta) of Epicurus, in that they can never be separated from a body[65]; and dispositions rather with the συμπτώματα (eventa), which come and go[66]. The third category appears to be used by the Stoics in a very wide sense, and to correspond to several of the categories of Aristotle[67]. Disposition is attached to quality as quality is attached to substance[68]; and though dispositions are not expressly termed bodies, yet we must consider them to be, as the terms in the Greek and Latin sufficiently indicate, bodies in particular aspects.

In the further applications of Stoic theory disposition as defined above appears to be replaced in Greek by the term ἕξις. But this term is used in two different senses. In the first place it is the movement of rarefaction and condensation, by which a spirit or thrill passes from the centre of an object to the extremities, and returns from the extremities to the centre[69]; in this sense it is translated in Latin by unitas, and takes bodily form as an air-current[70]. This force, when it requires a further motive power in the direction of development, becomes the principle of growth (φύσις, natura), and is displayed not only in the vegetable world, but also in animals, as in particular in the hair and nails[71]. Growth when it takes to itself the further powers of sensation and impulse becomes soul (ψυχή, anima), and is the distinctive mark of the animal world[72].

In a rather different sense ἕξις or temporary condition is contrasted with διάθεσις or ‘permanent disposition.’ In this sense the virtues are permanent dispositions of the soul, because virtue is unchanging; the arts are temporary conditions. The virtues belong to the wise man only, the arts to the ordinary man. This distinction however does not hold its ground in the Roman period, the word habitus (representing ἕξις), our ‘habit,’ being used in both senses[73]. The virtues are bodies, being dispositions of the soul which is bodily[74].

185. The fourth category, that of ‘relative position’ (πρός τί πως ἔχον) appears to be of less importance than the others[75]. Its characteristic is that it may disappear without altering that to which it belongs. Thus that which is on the right hand may cease to be so by the disappearance of that which was on its left; a father may cease to be such on the death of his son[76]. It seems difficult to describe the fourth category as one consisting of ‘body,’ but at least it is a function of body. Also it does not appear that ‘relative position’ can be predicated of the universe as a whole; it is peculiar to individual objects, but works towards their combination in a larger whole. The fourth category has an important application in practical ethics in the doctrine of daily duties, for these are largely determined by the relative positions (σχέσεις) of the parties concerned: such are the duties of a king to his people, a father to his son, a slave to his master[77].

186. Having fully considered bodies and their relationships, we proceed to consider their combination. In ordinary experience we meet with three kinds of combination; juxtaposition (παράθεσις), as in a mixture of various kinds of grain; mixture (μῖξις), when solid bodies are interfused, as fire and heat, or fusion (κρᾶσις), when fluids are interfused, as wine poured into the sea; chemical mixture (σύγχυσις), when each of the two bodies fused disappears[78]. Of these the second in its most completed form (κρᾶσις δι’ ὅλων, universa fusio) is of high importance. For in this way we find that soul is fused with body[79], quality with substance[80], light with air[81], God with the universe[82]. Aristotle admits that there is this mixture between substance and qualities; but as both of these are to the Stoics bodies, and so too are the members of the other pairs quoted, the Stoic doctrine must be summed up in the paradox ‘body moves through body[83].’ This also follows from the Stoic doctrine that there is no void in the universe. Correspondingly the sum total of body in its various aspects and mixtures completes the whole (ὅλον), which is identical with the ‘world-order’ or ‘universe’ (κόσμος)[84]. It seems likely that this important conception had been reached in very early times by the Chaldaean astronomers; it was definitely propounded by Pythagoras[85], had been taken up by Socrates[86] and the Sophists[87], and was in Stoic times generally accepted both in popular philosophy and in scientific investigation.

187. Up to this point the Stoic system has been guided by a determined monism. Body is; that which is not body is not. Yet in the end the Stoics feel compelled to speak of certain things which are not body (ἀσώματα, incorporalia). In the first instance there is the void beyond the universe[88]. It is possible to dispute as to whether void may more correctly be said to exist or not to exist; but at least it is a part of nature[89], and we need some term like ‘the all’ (τὸ πᾶν) to include both the universe and the void beyond[90]. Next we have to deal with statements (λεκτά), and mental conceptions of every kind, which stand as a class in contrast with the real objects to which they may or may not respectively correspond[91]. Lastly, the Stoics included space and time, which they had previously explained as functions of body, in the list of things not bodily[92]. Having thus reached the two main classes of ‘bodies,’ and ‘things not bodily,’ the monistic principle can only be saved by creating a supreme class to include both. Let this then be called the existent (τὸ ὄν, quod est)[93], or, if it be objected that things incorporeal do not exist[94], we may use the name ‘quiddities’ (τινά, quid)[95]. In this way the monistic theory, though a little damaged in vitality, is again set on its feet so far as the ingenious use of words can help.

188. The language of the Stoics with regard to the phenomena of speech and thought is not always easy to follow, and perhaps not altogether consistent. On the one hand, attaching high importance to the reasoning power, they desire to include its operations in that which is real and bodily. Thus the ‘mind-pictures’ and indeed all mental conceptions are bodily and even ‘animal,’ in the sense that they are operations of body[96]; and truthfulness, ignorance, science and art are all bodies in the sense that they are dispositions of the soul, which is bodily[97]. But ‘phrases’ (λεκτά) are definitely incorporeal, and with them appear to be ranked all mental conceptions and general ideas; about these there is a question, not merely whether they exist or not, but whether they may even be classed in the most general class of all as ‘quiddities[98].’ Nor can we call general conceptions true or false[99]; though of some of them, as of Centaurs, giants, and the like, we may say that they are formed by false mental processes[100]. Finally statements are either true or false, but are not to be called existent. The whole discussion therefore ends with the broad distinction between the object, which may be real or ‘existent,’ and the predication which may be ‘true’; and the attempt to unite these two conceptions is not persisted in[101].

189. Although the Stoics aim consistently at the monistic standard, they make frequent use of dualistic statements, some of which we have already noticed. The Latin writers often contrast soul and body from the standpoint of ethics[102]; and we meet in all the Stoic writers, and often in unguarded language, the favourite Aristotelian dualism of force and matter, or (what comes to the same thing) the active and passive principles. ‘Zeno’ (we are told) ‘laid down that there are two principles in the universe, the active and the passive. The passive is matter, or essence without quality; the active is the Logos or deity within it[103].’ So also Cleanthes and Chrysippus taught[104]; and in the Roman period Seneca regarded this as a well-understood dogma of the whole school[105]. But even if direct evidence were lacking, the whole bearing of the philosophy would shew that this dualism is also surmounted by an ultimate monism. God and matter are alike body; they cannot exist the one apart from the other[106]. Of this Cicero, speaking for the Stoics, gives a proof; matter could never have held together, without some force to bind it; nor force without matter[107]. We must not therefore be led by the term ‘principles’ (ἀρχαί, principia) to think of force and matter in any other way than as two aspects of primary body, separable as mental conceptions, inseparable as physical realities.

190. The position of the four ‘elements’ (στοιχεῖα, elementa) is similar; these are in the Stoic philosophy subdivisions of the two principles just discussed. For fire and air are of the nature of cause and movement; water and earth of receptivity and passivity[108]. Body is therefore made up of the four elements mixed[109], or perhaps rather of the elementary qualities of heat and cold, dry and wet, which they represent[110]. The doctrine of primary or elemental qualities had been taught before, first by Anaximenes, then by Hippocrates the physician, and by Aristotle[111]; the list of the four elements is traced back to Empedocles. For Aristotle’s ‘fifth element’ Zeno found no use[112].

191. Such are the fundamental conceptions or postulates with which the Stoics approach the problems of physics. It is not necessary for our purpose to compare their merit with those of Aristotle, or to set a value on the debt that Zeno and his successors owed to the founder of the Peripatetic school. Still less do we suggest that the Stoics have perfectly analyzed the contents of the universe, or have even produced an orderly and rounded scheme. But at least it seems clear that their work shews intellectual power, and that speculation is not necessarily less profound because it is pursued with a practical aim[113]. The founders of the Stoic philosophy had a wide reach; they took all knowledge to be their province; and they worked persistently towards the harmonization of all its parts.