=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]. [Sidenote: Force and matter.] =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. The interpretation is essentially the same, whether the Stoics speak of God and the universe, matter and cause, body and tension, or substance and quality, and has