TWO:With the introduction of practical questions, we pass to the great positive achievement of Carneades, his theory of probable evidence. Intended as an account of the process by which belief is adjusted to safe action rather than of the process by which it is brought into agreement with reality, his logic is a systematisation of the principles by which prudent men are unconsciously guided in common life. Carneades distinguishes three degrees of probability. The lowest is attached to simple perception. This arises when we receive the impression of an object without taking the attendant circumstances into account. The next step is reached when our first impression is confirmed by the similar impressions received from its attendant circumstances; and when each of these, again, bears the test of a similar examination our assurance is complete. The first belief is simply probable; the second is probable and uncontradicted; the third probable, uncontradicted, and methodically established. The example given by Sextus is that of a person who on seeing a coil of rope in a dark passage thinks that it may be a snake, and jumps over it, but on turning round and observing that it remains motionless feels inclined to form a different opinion. Remembering, however, that snakes are sometimes congealed by cold in winter, he touches the coil with his stick, and finally satisfies himself by means of this test that the image present to his mind does not really represent a snake. The circumstances to be examined before arriving at a definite judgment include such considerations as whether our senses are in a healthy condition, whether we are wide awake, whether the air is clear, whether the object is steady, and whether we have taken time enough to be sure that the conditions here specified are fulfilled. Each degree of probability is, again, divisible into several gradations according to the strength of the155 impressions received and the greater or less consilience of all the circumstances involved.252Bruce caught his breath sharply. He had scarcely time to consider what it all meant when the light flared up again, and the fair woman returned with a kettle and basin and a tin of mustard.
日本化学機械製造は、国内外に豊富な実績を持つプラントエンジニアリングとものづくりのプロフェッショナル集団です。
設計?製造?建設?メンテナンスまで自社一貫で担い、
顧客企業様の課題を解決するベストパートナーであるために日々前進し続けています。
オンリーワンの技術を武器に、私たちと一緒にあらゆる分野のプラントエンジニアリングに挑戦してみませんか。
- THREE:Subsequently, with the revival of Hellenism, the Greek oracles broke silence, and regained even more than their ancient reputation, as the increased facilities for locomotion now rendered them accessible from the remotest regions.343 Sometimes the miraculous character of their responses resulted in the conversion of hardened infidels. In this connexion, the following anecdote is related by Plutarch. A certain governor of Cilicia entertained serious doubts about the gods, and was still further confirmed in his impiety by the Epicureans who surrounded him. This man, for the purpose of throwing discredit on the famous oracle of Mopsus, sent a freedman to consult it, bearing a sealed letter containing a question with whose purport neither he nor any one else except the sender was acquainted. On arriving at the oracle, the messenger was admitted to pass a night within the temple, which was the method of consultation usually practised there. In his sleep a beautiful figure appeared to him, and after uttering the words a black one, immediately vanished. On hearing this answer the governor fell on his knees in consternation, and, opening the sealed tablet, showed his friends the question which it contained, Shall I sacrifice a white or a black bull to thee? The Epicureans were confounded; while the governor offered up the prescribed sacrifice, and became thenceforward a constant adorer of Mopsus.344
- THREE:After the explanations required of us they allowed us to go on. The incessant roar of the guns made the girl tremble for fear, and the stinging smoke made her cough. After much trouble we got at last as far as Herstal, where I had promised her a short rest.
TWO:The social studies through which we have accompanied Plato seem to have reacted on his more abstract speculations, and to have largely modified the extreme opposition in which these had formerly stood to current notions, whether of a popular or a philosophical character. The change first becomes perceptible in his theory of Ideas. This is a subject on which, for the sake of greater clearness, we have hitherto refrained from entering; and that we should have succeeded in avoiding it so long would seem to prove that the doctrine in question forms a much less important part of his philosophy than is commonly imagined. Perhaps, as some think, it was not an original invention of his own, but was borrowed from the Megarian school; and the mythical connexion in which it frequently figures makes us doubtful how far he ever thoroughly accepted it. The theory is, that to every abstract name or conception of the mind there corresponds an objective entity possessing a separate existence quite distinct from that of the scattered particulars by which it is exemplified to our senses or to our imagination. Just as the Heracleitean flux represented the confusion of which Socrates convicted his interlocutors, so also did these Ideas represent the definitions by which he sought to bring method and certainty into their opinions. It may be that, as Grote suggests, Plato adopted this hypothesis in order to escape from the difficulty of defining common notions in a satisfactory manner. It is certain that his earliest Dialogues seem to place true definitions beyond the reach of human knowledge. And at the beginning of Platos constructive period we find the recognition of abstract conceptions, whether mathematical or moral, traced to the remembrance of an ante-natal state, where the soul held direct converse with the transcendent realities to which those conceptions correspond. Justice, temperance, beauty, and goodness, are especially mentioned as examples263 of Ideas revealed in this manner. Subsequent investigations must, however, have led Plato to believe that the highest truths are to be found by analysing not the loose contents but the fixed forms of consciousness; and that, if each virtue expressed a particular relation between the various parts of the soul, no external experience was needed to make her acquainted with its meaning; still less could conceptions arising out of her connexion with the material world be explained by reference to a sphere of purely spiritual existence. At the same time, innate ideas would no longer be required to prove her incorporeality, when the authority of reason over sense furnished so much more satisfactory a ground for believing the two to be of different origin. To all who have studied the evolution of modern thought, the substitution of Kantian forms for Cartesian ideas will at once elucidate and confirm our hypothesis of a similar reformation in Platos metaphysics.
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TWO:Lawrence was fortunately at home. He had just finished a story, so that his frame of mind was complaisant. But as he listened to the dramatic events of the afternoon he grew deeply interested.