A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation |
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Common terms and phrases
according action affirmed already animal appears applied argument ascertained assertion attributes believe body called causation cause character circumstances combination common complete conceive conception conclusion connotation consequent considered consists deductive definition denote depend determine direct distinction doctrine effect equal evidence example exist experience expression fact feelings force former give given ground human idea important included individual induction inference inquiry instance kind knowledge known language laws less lines logic manner mark matter meaning merely Method mind mode motion nature necessary never objects observation operation original particular persons phenomena phenomenon philosophers possess possible practical predicate premisses present principles probability produced properties proposition proved question reason relation remarked require resemblance respecting result scientific sensations sense similar species substances succession sufficient supposed term theory things thought tion true truth universal whole
Popular passages
Page 224 - If two or more instances of the phenomenon under investigation have only one circumstance in common, the circumstance in which alone all the instances agree is the cause (or effect) of the given phenomenon.
Page 230 - Subduct from any phenomenon such part as is known by previous inductions to be the effect of certain antecedents, and the residue of the phenomenon is the effect of the remaining antecedents.
Page 200 - The cause, then, philosophically speaking, is the sum total of the conditions, positive and negative, taken together; the whole of the contingencies of every description, which being realized, the consequent invariably follows.
Page 184 - Whatever be the most proper mode of expressing it, the proposition that the course of nature is uniform is the fundamental principle, or general axiom, of Induction. It would yet be a great error to offer this large generalisation as any explanation of the inductive process. On the contrary, I hold it to be itself an instance of induction, and induction by no means of the most obvious kind. Far from being the first induction we make, it is one of the last, or at all events one of those which...
Page 295 - Let any one watch the manner in which he himself unravels any complicated mass of evidence ; let him observe how, for instance, he elicits the true history of any occurrence from the involved statements of one or of many witnesses.
Page 295 - The process of tracing regularity in any complicated, and, at first sight, confused set of appearances, is necessarily tentative : we begin by making any supposition, even a false one, to see what consequences will follow from it ; and by observing how these differ from the real phenomena we learn what corrections to make in our assumption.
Page 459 - That gravity should be innate, inherent and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking can ever fall into it.
Page 564 - These it takes, to a certain extent, into its calculations, because these do not merely, like our other desires, occasionally conflict with the pursuit of wealth, but accompany it always as a drag or impediment, and are therefore inseparably mixed up in the consideration of it. Political Economy considers mankind as occupied solely in acquiring and consuming wealth...
Page 122 - When we say, All men are mortal, Socrates is a man, therefore Socrates is mortal ; it is unanswerably urged by the adversaries of the syllogistic theory, that the proposition, Socrates is mortal, is presupposed in the more general assumption, All men are mortal...