The Theory of Reasoning |
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Common terms and phrases
act of reasoning adduced admitted alleged already applied Aristotle assertion attribute axiom belong chap chapter character cited class-reasoning clusion cogency collective fact considered contingent reasoning deduce demonstrative reasoning dictum de omni discern distance distinct distribution of terms doctrine draw Dugald Stewart employed endwise enthymeme equal erroneous conclusions error Euclid evidence examination example exemplified expressed fallacy fallible false ference generalisation gisms happen horned quadrupeds Implied fact individual induction instance intellectual John Mill language latter logicians major premise meaning middle term minor monstrative moral nature objects omni et nullo operations particular facts passage perceive philosophers Port Royal possess preceding predicated principles or maxims proceeds proof proved rays regard remarked retina right angles rules ruminant says scholastic logic seen self-evident similar species of reasoning Stewart syllogism syllogistic theory thing tical tion treatise triangle true truth validity whole words
Popular passages
Page 189 - All persons, possessing any portion of power, ought to be strongly and awfully impressed with an idea that they act in trust ; and that they are to account for their conduct, in that trust, to the one great Master, author and founder of society.
Page 176 - If the quantity of labour realised in commodities regulate their exchangeable value, every increase of the quantity of labour must augment the value of that commodity on which it is exercised, as every diminution must lower it.
Page 190 - It is therefore of infinite importance that they should not be suffered to imagine that their will, any more than that of kings, is the standard of right and wrong. They ought to be persuaded that they are full as little entitled, and far less qualified, with safety to themselves, to use any arbitrary power whatsoever...
Page 200 - It is, I think, agreed by all that distance of itself, and immediately, cannot be seen. For distance being a line directed endwise to the eye, it projects only one point in the fund of the eye—which point remains invariably the same, whether the distance be longer or shorter.
Page 35 - Asinarum) will agree that though it may be more difficult to prove that the angles at the base of an isosceles triangle are equal...
Page 64 - ... that whatever is predicated (ie affirmed or denied) universally, of any class of things, may be predicated, in like manner, (viz. affirmed or denied) of any thing comprehended in that class.
Page 186 - For example, if as the angles of a triangle are together equal to two right angles...
Page 18 - The consequence seems nowise necessary. At least, it must be acknowledged that there is here a consequence drawn by the mind that there is a certain step taken, a process of thought, and an inference which wants to be explained.
Page 189 - But where popular authority is absolute and unrestrained, the people have an infinitely greater, because a far better founded, confidence in their own power. They are themselves in a great measure their own instruments. They are nearer to their objects. Besides, they are less under responsibility to one of the greatest controlling powers on earth, the sense of fame and estimation. The share of infamy that is...
Page 97 - ... the whole is equal to all its parts ; and that if one of these have need to be confirmed to him by the other, the general has more need to be let into his mind by the particular, than the particular by the general. For in particulars our knowledge begins, and so spreads itself by degrees to generals.