ONE:Now, there is this great difference between Aristotle and Mill, that the former is only showing how reasoning from examples can be set forth in syllogistic form, while the latter is investigating the psychological process which underlies all reasoning, and the real foundation on which a valid inference restsquestions which had never presented themselves clearly to the mind of the Greek philosopher at all. Mill argues, in the first instance, that when any particular proposition is deduced from a general proposition, it is proved by the same evidence as that on which the general itself rests, namely, on other particulars; and, so far, he is in perfect agreement with Aristotle. He then argues that inferences from particulars to particulars are perpetually made without passing through a general proposition: and, to illustrate his meaning, he quotes the example of a village matron and her Lucy, to which Mr. Wallace refers with a very gratuitous sneer.285Bacon begins by demanding that throughout the whole range of experience new facts should be collected on the largest scale, in order to supply materials for scientific generalisation. There can be no doubt that he is here guided by the example of Aristotle, and of Aristotle alone. Such a storehouse of materials is still extant in the History of Animals, which evidently suggested the use of the word History in this sense to Bacon, and which, by the way, is immensely superior to anything that he ever attempted in374 the same line. The facts on which Aristotles Politics is based were contained in another vast descriptive work of the same kind, now unhappily lost. Even the Stagirites more systematic treatises comprise a multitude of observations, catalogued according to a certain order, but not reduced to scientific principles. What Bacon did was to carry out, or to bid others carry out, the plan so suggested in every department of enquiry. But if we ask by what method he was guided in his survey of the whole field to be explored, how he came by a complete enumeration of the sciences, arranged according to their logical order,the answer is still that he borrowed it from the Peripatetic encyclopaedia.
TWO:To illustrate the practical application of what has preceded, let it be supposed, for example, that a machine is to be made for cutting teeth in iron racks ? in. pitch and 3 in. face, and that a design is to be prepared without reference to such machines as may already be in use for the purpose.One not accustomed to manual labour will, after commencing, find his limbs aching, his hands sore; he will feel exhausted both at the beginning and at the end of a day's work. These are not dangerous symptoms. He has only to wait until his system is built up so as to sustain this new draught upon its resources, and until nature furnishes a power of endurance, which will in the end be a source of pride, and add a score of years to life. Have plenty of sleep, plenty of plain, substantial food, keep the skin clean and active, laugh at privations, and cultivate a spirit of self-sacrifice and a pride in endurance that will court the hardest and longest efforts. An apprentice who has not the spirit and firmness to endure physical labour, and adapt himself to the conditions of a workshop, should select some pursuit of a nature less aggressive than mechanical engineering.
