ONE:If the nature of their errand was not precisely calculated to win respect for the profession of the Athenian envoys, the subsequent proceedings of one among their number proved still less likely to raise it in the estimation of those whose favour they sought to win. Hellenic culture was, at that time, rapidly gaining ground among the Roman aristocracy; Carneades, who already enjoyed an immense reputation for eloquence and ingenuity among his own countrymen, used the opportunity offered by his temporary residence in the imperial city to deliver public lectures on morality; and such was the eagerness to listen that for a time the young nobles could think and talk of nothing else. The subject chosen was justice. The first lecture recapitulated whatever had been said in praise of that virtue by Plato and Aristotle. But it was a principle of the sect to which Carneades belonged that every affirmative proposition, however strongly supported, might be denied with equal plausibility. Accordingly, his second discourse was entirely devoted to upsetting the conclusions advocated in the first. Transporting the whole question, as would seem, from a private to a public point of view, he attempted to show, from the different standards prevailing in different countries, that there was no such thing as an immutable rule of right; and also that the greatest and most successful States had profited most by unscrupulous aggressions on their weaker neighbourshis most telling illustrations being drawn from the history of the Romans themselves. Then, descending once more to private life, the sceptical lecturer expatiated on the frequency of those cases in which justice is opposed to self-interest, and the folly of122 sacrificing ones own advantage to that of another. Suppose a good man has a runaway slave or an unhealthy house to sell, will he inform the buyer of their deficiencies, or will he conceal them? In the one case he will be a fool, in the other case he will be unjust. Again, justice forbids us to take away the life or property of another. But in a shipwreck, will not the just man try to save his life at anothers expense by seizing the plank of which some weaker person than himself has got holdespecially if they are alone on the sea together? If he is wise he will do so, for to act otherwise would be to sacrifice his life. So also, in flying before the enemy, will he not dispossess a wounded comrade of his horse, in order to mount and escape on it himself? Here, again, justice is incompatible with self-preservationthat is to say, with wisdom123!213And although they also promised to do everything in their power to prevent lack of food in Belgium, they have bled to death the unfortunate country by continuous impositions and taxes, and thrown many into poverty and misery.
TWO:It was natural that one who ranged with such consummate mastery over the whole world of apparent reality, should believe in no other reality; that for him truth should only319 mean the systematisation of sense and language, of opinion, and of thought. The visible order of nature was present to his imagination in such precise determination and fulness of detail that it resisted any attempt he might have made to conceive it under a different form. Each of his conclusions was supported by analogies from every other department of enquiry, because he carried the peculiar limitations of his thinking faculty with him wherever he turned, and unconsciously accommodated every subject to the framework which they imposed. The clearness of his ideas necessitated the use of sharply-drawn distinctions, which prevented the free play of generalisation and fruitful interchange of principles between the different sciences. And we shall have occasion to show hereafter, that, when he attempted to combine rival theories, it was done by placing them in juxtaposition rather than by mutual interpenetration. Again, with his vivid perceptions, it was impossible for him to believe in the justification of any method claiming to supersede, or even to supplement, their authority. Hence he was hardly less opposed to the atomism of Democritus than to the scepticism of Protagoras or the idealism of Plato. Hence, also, his dislike for all explanations which assumed that there were hidden processes at work below the surface of things, even taking surface in its most literal sense. Thus, in discussing the question why the sea is salt, he will not accept the theory that rivers dissolve out the salt from the strata through which they pass, and carry it down to the sea, because river-water tastes fresh; and propounds in its stead the utterly false hypothesis of a dry saline evaporation from the earths surface, which he supposes to be swept seawards by the wind.205 Even in his own especial province of natural history the same tendency leads him astray. He asserts that the spider throws off its web from the surface of its body like a skin, instead of evolving it from within, as Democritus had taught.206 The same thinker had320 endeavoured to prove by analogical reasoning that the invertebrate animals must have viscera, and that only their extreme minuteness prevents us from perceiving them; a view which his successor will not admit.207 In fact, wherever the line between the visible and the invisible is crossed, Aristotles powers are suddenly paralysed, as if by enchantment.
