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FORE:To master the various details of machine manufacture, including draughting, founding, forging, and fitting, is of itself a work equal to most professional pursuits, to say nothing of manual skill; and when we come to add machine functions and their application, generating and transmitting power, with other things that will necessarily be included in practice, the task assumes proportions that makes it appear a hopeless one. Besides, the work of keeping progress with the mechanic arts calls for a continual accretion of knowledge; and it is no small labour to keep informed of the continual changes and improvements that are going on in all parts of the world, which may at any time modify and change both machines and processes. But few men, even under the most favourable conditions, have been able to qualify themselves as competent mechanical engineers sooner than at forty years of age.Designing, or generating the plans of machinery, may be considered the leading element in engineering manufactures or machine construction, that one to which all others are subordinate, [75] both in order and importance, and is that branch to which engineering knowledge is especially directed. Designing should consist, first, in assuming certain results, and, secondly, in conceiving of mechanical agents to produce these results. It comprehends the geometry of movements, the disposition and arrangement of material, the endurance of wearing surfaces, adjustments, symmetry; in short, all the conditions of machine operation and machine construction. This subject will be again treated of at more length in another section.

FORE:And 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.Even in his much-admired criticisms on the actually existing types of government our philosopher shows practical weakness and vacillation of character. There is a good word for them all��for monarchy, for aristocracy, for middle-class rule, and even for pure democracy.183 The fifth book, treating of297 political revolutions, is unquestionably the ablest and most interesting in the whole work; but when Aristotle quits the domain of natural history for that of practical suggestions, with a view to obviate the dangers pointed out, he can think of nothing better than the old advice��to be moderate, even where the constitutions which moderation is to preserve are by their very nature so excessive that their readjustment and equilibration would be equivalent to their destruction. And in fact, Aristotle��s proposals amount to this��that government by the middle class should be established wherever the ideal aristocracy of education is impracticable; or else a government in which the class interests of rich and poor should be so nicely balanced as to obviate the danger of oligarchic or democratic injustice. His error lay in not perceiving that the only possible means of securing such a happy mean was to break through the narrow circle of Greek city life; to continue the process which had united families into villages, and villages into towns; to confederate groups of cities into larger298 states; and so, by striking an average of different inequalities, to minimise the risk of those incessant revolutions which had hitherto secured the temporary triumph of alternate factions at the expense of their common interest. And, in fact, the spontaneous process of aggregation, which Aristotle did not foresee, has alone sufficed to remedy the evils which he saw, but could not devise any effectual means of curing, and at the same time has bred new evils of which his diagnosis naturally took no account.