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John Locke
An Essay Concerning Human Understanding Section S5
Section 124 of 1,114
Canonical reference B2.C4.S5
English
Project Gutenberg transcription of Locke author text
By this idea of solidity is the extension of body distinguished from the extension of space: - the extension of body being nothing but the cohesion or continuity of solid, separable, movable parts; and the extension of space, the continuity of unsolid, inseparable, and immovable parts. Upon the solidity of bodies also depend their mutual impulse, resistance, and protrusion. Of pure space then, and solidity, there are several (amongst which I confess myself one) who persuade themselves they have clear and distinct ideas; and that they can think on space, without anything in it that resists or is protruded by body. This is the idea of pure space, which they think they have as clear as any idea they can have of the extension of body: the idea of the distance between the opposite parts of a concave superficies being equally as clear without as with the idea of any solid parts between: and on the other side, they persuade themselves that they have, distinct from that of pure space, the idea of SOMETHING THAT FILLS SPACE, that can be protruded by the impulse of other bodies, or resist their motion. If there be others that have not these two ideas distinct, but confound them, and make but one of them, I know not how men, who have the same idea under different names, or different ideas under the same name, can in that case talk with one another; any more than a man who, not being blind or deaf, has distinct ideas of the colour of scarlet and the sound of a trumpet, could discourse concerning scarlet colour with the blind man I mentioned in another place, who fancied that the idea of scarlet was like the sound of a trumpet.
French
Pierre Coste · Pierre Mortier, Amsterdam, 1735, third edition
Selon cette idée de la Solidité, l’étenduë du Corps eſt diſtincte de l’étenduë de l’Eſpace. Car l’étenduë du Corps n’eſt autre choſe qu’une union ou continuité de parties ſolides, diviſibles, & capables de mouvement : a lieu que l’étenduë de l’Eſpace eſt une continuité de parties non ſolides, indiviſibles, & immobiles. C’eſt d’ailleurs de la Solidité des Corps que dépend leur impulſion mutuelle, leur réſiſtance & leur ſimple impulſion. Cela poſé, il y a bien des gens, au nombre deſquels je me range, qui croyent avoir des idées claires & diſtinctes du pur Eſpace & de la Solidité, & qui s’imaginent pouvoir penſer à l’Eſpace ſans y concevoir quoi que ce ſoit qui réſiſte, ou qui ſoit capable d’être pouſſé par aucun Corps. C’eſt-là, dis-je, l’idée de l’Eſpace pur, qu’ils croyent avoir auſſi nettement dans l’Eſprit, que l’idée qu’on peut ſe former de l’étenduë du Corps : car l’idée de la diſtance qui eſt entre les parties oppoſées d’une ſurface concave, eſt tout auſſi claire, ſelon eux, ſans l’idée d’aucune partie ſolide qui ſoit entre deux, qu’avec cette idée. D’un autre côté, ils ſe perſuadent qu’outre l’idée de l’Eſpace pur, ils en ont une autre tout-à-fait différente de quelque choſe qui remplit cet Eſpace, & qui peut en être chaſſé par l’impulſion de quelque autre Corps, ou réſiſter à ce mouvement. Que s’il ſe trouve d’autres gens qui n’ayent pas ces deux idées diſtinctes, mais qui les confondent & des deux n’en faſſent qu’une, je ne vois pas que des perſonnes qui ont la même idée ſous différens noms, ou qui donnent le même nom à des idées différentes, puiſſent non plus s’entretenir enſemble, qu’un homme qui n’étant ni aveugle ni ſourd & ayant des idées diſtinctes de la couleur nommée Ecarlate, & du ſon de la Trompette, voudroit diſcourir de l’Ecarlate avec cet Aveugle, dont je parle ailleurs, qui s’étoit figuré que l’idée de l’Ecarlate reſſembloit au ſon d’une Trompette.
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