FORE:The triumph of Stoicism was, however, retarded by the combined influence of the Academic and Peripatetic schools. Both claimed the theory of a morality founded on natural law as a doctrine of their own, borrowed from them without acknowledgment by the Porch, and restated under an offensively paradoxical form. To a Roman, the Academy would offer the further attraction of complete immunity from the bondage of a speculative system, freedom of enquiry limited only by the exigencies of practical life, and a conveniently elastic interpretation of the extent to which popular faiths might be accepted as true. If absolute suspense of judgment jarred on his moral convictions, it was ready with accommodations and concessions. We have seen how the scepticism of Carneades was first modified by Philo, and then openly renounced by Philos successor, Antiochus. Roman170 influence may have been at work with both; for Philo spent some time in the capital of the empire, whither he was driven by the events of the first Mithridatic War; while Antiochus was the friend of Lucullus and the teacher of Cicero.268
FORE:I asked and got the commander's permission to travel to Lige by military train, and from there to The Netherlands, not only for myself, but also for a Netherland girl of nine years, whose parents in Amsterdam had repeatedly and persistently asked me to see whether there would be any possibility of letting their little girl come back from a Louvain boarding-school. The Sisters with whom she was let her go with me when I showed them a letter208 from her father. That child had already seen a good deal! The Sisters had fled with all the children at the time of the conflagration, and hidden themselves for days in a farm in the neighbourhood.
FORE:I now come to speak directly of the present work and its objects. It may be claimed that a book can go no further in treating of mechanical manipulation than principles or rules will reach, and that books must of necessity be confined to what may be called generalities. This is in a sense true, and it is, indeed, a most difficult matter to treat of machine operations and shop processes; but the reason is that machine operations and shop processes have not been reduced to principles or treated in the same way as strains, proportions, the properties of material, and so on. I do not claim that manipulative processes can be so generalisedthis would be impossible; yet much can be done, and many things regarded as matters of special knowledge can be presented in a way to come within principles, and thus rendered capable of logical investigation.
THREE:
THREE:It was from the initiative of Socrates that logic received this direction. By insisting on the supreme importance of definition, he drew away attention from the propositions which add to our knowledge, and concentrated it on those which only fix with precision the meaning of words. Yet, in so doing he was influenced quite as much by the spirit of the older physical philosophy, which he denounced, as by the necessities of the new humanistic culture, which he helped to introduce. His definitions were, in truth, the reproduction, on a very minute scale, of those attempts to formulate the whole universe which busied the earliest Ionian speculation. Following the natural tendency of Greek thought, and the powerful attraction of cosmic philosophy, an effort was speedily made to generalise and connect these partial defini378tions until they grew into a system of universal classification. It was when, under the influence of a new analysis, this system threatened to fall to pieces, that a rudimentary doctrine of judgment first made its appearance. The structure of a grammatical sentence was used to explain how objective ideas could, in a manner, overlap and adhere to one another. Hence propositions, which, as the expression of general truths, were destined to become the beginning and end of thought, remained at first strictly subordinated to the individual concepts that they linked and reconciled.Disjunction is, in truth, the primordial form of all reasoning, out of which the other forms are successively evolved; and, as such, it is common to man with the lower animals. You are taking a walk in the country with your dog. You come to a stream and jump over it. On measuring the distance with his eye, the animal is afraid to follow you. After waiting a little, he first runs up stream in search of a crossing, and, finding none, returns to look for one in the opposite direction. Failing there also, he comes back once more, and either ventures on the leap or makes his way home by some other route. Now, on considering the matter a little more382 closely, we shall find that hypothetical reasoning takes its rise from the examination of each separate alternative presented by a disjunctive premise. A plurality of courses being open to us, we consider what will ensue on the acceptance or rejection of each. The dog in our illustration thinks (after a canine fashion) that if he jumps he may fall in; if he does not, he will be left behind. Hector will not take refuge within the walls, because, if he does, Polydamas will triumph over him; nor will he offer terms of peace, because, if he does, Achilles will refuse them. Once more, categorical reasoning is developed out of hypothetical reasoning by the necessity of deducing consequences from a general rule. Hector must have argued from the known characters of Polydamas and Achilles, that in certain circumstances they would act after a certain manner. We may add, that this progress of conscious reasoning is a reproduction of the unconscious logic according to which life itself is evolved. All sorts of combinations are spontaneously produced, which, in consequence of the struggle for existence, cannot all survive. Those adapted to the conditions of life are selected, on trial, at the expense of the rest; and their adaptation or non-adaptation is determined in accordance with categorical laws. Furthermore, the framing of a disjunctive proposition necessitates the systematic distribution of possibilities under mutually exclusive heads, thus involving the logical processes of definition, division, and classification. Dialectic, as Plato understood it, consisted almost entirely in the joint performance of these operations;a process which Aristotle regards as the immediate but very imperfect precursor of his own syllogistic method.276 You cannot, he says, prove anything by dividing, for instance, all living things into the two classes, mortal and immortal; unless, indeed, you assume the very point under discussionto which class a particular species belongs. Yet this is how he constantly reasons himself; and even demonstrative reason383ing, as he interprets it, implies the possession of a ready-made classification. For, according to him, it consists exclusively of propositions which predicate some essential attribute of a thingin other words, some attribute already included in the definition of the subject; and a continuous series of such definitions can only be given by a fixed classification of things.
