An Essay Concerning Human Understanding: In Four Books, Volume 2

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H. Woodfall, 1768

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Página 131 - For if we will reflect on our own ways of thinking, we shall find that sometimes the mind perceives the agreement or disagreement of two ideas immediately by themselves, without the intervention of any other : and this, I think, we may call intuitive knowledge.
Página 131 - This part of knowledge is irresistible, and like bright sunshine forces itself immediately to be perceived, as soon as ever the mind turns its view that way; and leaves no room for hesitation, doubt, or examination, but the mind is presently filled with the clear light of it. It is on this intuition that depends all the certainty and evidence of all our knowledge...
Página 188 - Is it true of the idea of a triangle, that its three angles are equal to two right ones ? It is true also of a triangle, wherever it really exists. Whatever other figure exists, that is not exactly answerable to the idea of a triangle in his mind, is not at all concerned in that proposition...
Página 10 - ... for example. And thus they come to have a general name, and a general idea. Wherein they make nothing new, but only leave out of the complex idea they had of Peter and James, Mary and Jane that which is peculiar to each, and retain only what is common to them all.
Página 300 - Every man's reasoning and knowledge is only about the ideas existing in his own mind; which are truly, every one of them, particular existences: and our knowledge and reason about other things, is only as they correspond with those our particular ideas.
Página 131 - Such kind of truths the mind perceives at the first sight of the ideas together, by bare intuition, without the intervention of any other idea ; and this kind of knowledge is the clearest and most certain, that human frailty is capable of.
Página 13 - When therefore we quit particulars, the generals that rest are only creatures of our own making, their general nature being nothing but the capacity they are put into by the understanding of signifying or representing many particulars. For the signification they have is nothing but a relation that by the mind of man is added to them.
Página 49 - There are animals so near of kin both to birds and beasts, that they are in the middle between both : amphibious animals link...
Página 256 - He that, in the ordinary affairs of life, would admit of nothing but direct plain demonstration, would be sure of nothing in this world, but of perishing quickly.
Página 8 - Men would in vain heap up names of particular things that would not serve them to communicate their thoughts. Men learn names, and use them in talk with others, only that they may be understood: which is then only done when by use or consent the sound I make by the organs of speech, excites in another man's mind who hears it the idea I apply it...

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