A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation, Volume 1Harper, 1846 - 593 páginas |
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Outras edições - Ver tudo
A System of Logic, Ratiocinative and Inductive: Being a Connected View of ... John Stuart Mill Pré-visualização indisponível - 2017 |
A System of Logic, Ratiocinative and Inductive: Being a Connected View of ... John Stuart Mill Pré-visualização indisponível - 2014 |
Palavras e frases frequentes
affirmed animal antecedent applied Archbishop Whately ascer ascertained assertion attributes axioms believe body called carbonic acid cause circumstances classification coexistence color combination common conceive conception conclusion connexion connotation consequent considered copula deductive definition denote distinction doctrine earth effect ellipse empirical law equal evidence example exist experience expression fact feelings follow genus geometry ground idea individual induction inference inquiry instances kind known language laws of causation laws of nature Leyden jar logic logicians mark matter meaning men are mortal mental merely Method of Agreement Method of Difference mind mode mortal motion objects observation particular peculiar phenomena phenomenon philosophers possess predicate premisses present principle produced properties proposition proved quadrupeds quantity ratiocination reason relation resemblance respecting result scientific sensations sense signification Socrates species substances supposed supposition syllogism term theory things tion true truth uniformities universal universal proposition Whewell word
Passagens conhecidas
Página 198 - 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.
Página 172 - Induction, then, is that operation of the mind, by which we infer that what we know to be true in a particular case or cases, will be true in all cases which resemble the former in certain assignable respects. In other words, Induction is the process by which we conclude that what is true of certain individuals of a class is true of the whole class, or that what is true at certain times will be true in similar circumstances at all times.
Página 201 - But it is necessary to our using the word cause that we should believe not only that the antecedent always has been followed by the consequent, but that as long as the present constitution of things endures it always will be so.
Página 585 - ... defines the end, and hands it over to the science. The science receives it, considers it as a phenomenon or effect to be studied, and having investigated its causes and conditions, sends it back to art with a theorem of the combination of circumstances by which it could be produced.
Página 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.
Página 374 - In order that any alleged fact should be contradictory to a law of causation, the allegation must be, not simply that the cause existed without being followed by the effect, for that would be no uncommon occurrence; but that this happened in the absence of any adequate counteracting cause. Now in the case of an alleged miracle, the assertion is the exact opposite of this.
Página 120 - 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...
Página 201 - That which will be followed by a given consequent when, and only when, some third circumstance also exists, is not the cause, even though no case should ever have occurred in which the phenomenon took place without it.
Página 15 - A name is a word taken at pleasure to serve for a mark which may raise in our mind a thought like to some thought we had before, and which being pronounced to others may be to them a sign of what thought the speaker had before in his mind.
Página 154 - Necessary truths," says Dr. Whewell, " are those in which we not only learn that the proposition is true, but see that it must be true ; in which the negation is not only false, but impossible; in which we cannot, even by an effort of the imagination, or in a supposition, conceive the reverse of that which is asserted.