accompanying action activity aggregate argument arise asserted attributes become body cause certain changes chapter coexistence cognition colour common compared complex conceived conception conclusion consciousness considered constitute continues definite direct distinct distinguished effects elements emotion equal established excited existence experiences express eyes fact faint feeling follows force further give given greater hand Hence ideas implies impressions increasing individual inference intuition involved kind known less lines magnitudes manifest means mental mind motion muscular nature needful object observe organism original pain particular pass perceived perception pleasure positions possible predicated present produced proposition question reached reasoning recognized relations relative remains representation represented resistance respect sensations sense sentiments separate shown side simple simultaneous sound space stand successive suppose things thought tion true truth unlike vivid
Página 57 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.
Página 334 - ALL the objects of human reason or enquiry may naturally be divided into two kinds, to wit. Relations of Ideas, and Matters of Fact. Of the first kind are the sciences of Geometry, Algebra, and Arithmetic; and in short, every affirmation which is either intuitively or demonstratively certain.
Página 334 - The contrary of every matter of fact is still possible; because it can never imply a contradiction, and is conceived by the mind with the same facility and distinctness, as if ever so conformable to reality. That the sun will not rise to-morrow is no less intelligible a proposition, and implies no more contradiction than the affirmation, that it will rise. We should in vain, therefore, attempt to demonstrate its falsehood. Were it demonstratively false, it would imply a contradiction, and could never...
Página 334 - Matters of fact, which are the second objects of human reason, are not ascertained in the same manner; nor is our evidence of their truth, however great, of a like nature with the foregoing. The contrary of every matter of fact is still possible; because it can never imply a contradiction, and is conceived by the mind with the same facility and distinctness, as if ever so conformable to reality.
Página 340 - When we entertain, therefore, any suspicion that a philosophical term is employed without any meaning or idea (as is but too frequent), we need but enquire, from what impression is that supposed idea derived? And if it be impossible to assign any, this will serve to confirm our suspicion.
Página 20 - IF a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
Página 320 - Here, therefore, we may divide all the perceptions of the mind into two classes or species, which are distinguished by their different degrees of force and vivacity. The less forcible and lively are commonly denominated THOUGHTS or IDEAS.
Página 315 - I can imagine a man with two heads, or the upper parts of a man joined to the body of a horse. I can consider the hand, the eye, the nose, each by itself abstracted or separated from the rest of the body. But then, whatever hand or eye I imagine, it must have some particular shape and colour.
Página 329 - Nor consequently of the greatest heat perceived by sense, since you acknowledge this to be no small pain?