The essence of physical matter consists rather in solidity: whereimpenetrability is found there is body, and the converse; the two are absolutely inseparable.
Impenetrability is nothing more than the feeling of resistance, an idea, therefore, which self-evidently can be nowhere else than in the mind experiencing it.
The quality or state of having been proved or tried; firmness or hardness that resists impression, or does not yield to force; impenetrability of physical bodies.
One of the Australian wattle trees (Acacia colletioides), so called from the impenetrability of the thicket which it makes.
There must be an end now of this silent reserve, of that air of impenetrability behind which he had been safeguarding his dignity.
The impenetrability of the embodied Gould Concession had its surface shades.
This impenetrability and something mulish in her attitude annoyed him.
To James' great relief they reached the house at last; the silence andimpenetrability of this woman by his side, whom he had always thought so soft and mild, alarmed him.
The objection was, that as the idea of impenetrability is not contained in the conception of a solid, we may imagine an infinite series of infinites placed one inside of another.
Motion and impenetrability are determinations which accompany extension, or rather they are relations of extension.
Impenetrability is the reciprocal exclusion of two extensions.
Now, interpenetration in any rigorous sense, any but the loose colloquial sense of small division and uniform diffusion, is the mere contradiction of impenetrability or identity.
But impenetrability is just identity, as Bergson remarks;[150] it is a logical principle rather than a physical law.
For suddenly, close, so close that the vibration of it could be felt, but muffled in the impenetrability of the jungle, a shot rang out.
Were they two material individuals they should, of course, occupy the same space in order to have similar spatial relations, but impenetrability is not essential to corporeal substances.
But, like the Indian, there was a reserve and impenetrability about Thoreau which prevented him from ever becoming really confidential in print.
The frank confidences of his Confessions hide from view the inner ring of reserve, which gave a strange impenetrability to his character, even to those who knew and loved him best.
The coarse thick skin, knotty or granulated on its surface, is of such tenacity and impenetrability about the short thick legs and ungainly body, that it resists the claws of the lion or the tiger, the sword or the shot of the hunter.
The law of the impenetrability of matter had to be set aside, of course--or else light must be pure vibration, without a material vibrating concomitant.
If on the contrary they join impenetrability to the three dimensions, they are no more talking about something simple.
Besides, impenetrability is a quality, or is derived from a quality; but what is the source of impenetrability?
I' has not the least predicate of intuition which, in its character of permanence, could, somewhat after the manner of impenetrability in the empirical intuition of matter, serve as correlate of time determination in inner sense.
In order to have a distinct concept of body, I clearly represent to myself impenetrability as an attribute of it.
The other warns us against regarding any single determination in things (such, for instance, as impenetrability or gravity) as absolutely necessary, and so bids us keep the way always open for further derivation.
None of the qualities proper to material existence, such as impenetrability or motion, are to be discovered in our inner experience.
Notwithstanding the Ideal demands of the regulative principle, matter may be primordial and necessary, and its properties of extension and impenetrability may not be derivable from anything more ultimate.
The interest is the mystery and the impenetrability of it all; it is so impossible to foresee contingencies or to predict conduct.
But the arrogance and impenetrability of the man rise up on every page.
I don't suppose that all this has given him as much pain as one would imagine, because he has all the impenetrability and want of perception of the real egoist.
It is only when our muscular effort to move or penetrate the external body is met and resisted by the same, that we learn the impenetrability of the opposing body.
Let the same object be allowed to rest with gradually increasing weight upon the hand until it becomes painful, and we get the idea of weight, gravitation, but not of the hardness or impenetrability of the object.
You wrap yourself in impenetrability and expect the world to be clairvoyant.
So out of tune was it with its environment, so little understood, and so little expecting to be, that wrapping itself in a mantle of impenetrability and adjusting its mask, no one knew what existed behind it.
For if, according to its will, all existing matter were collected in one mass, yet within this mass gravity, ever striving towards the centre, would still wage war with impenetrability as rigidity or elasticity.
I hope so too," said Lady Tyrrell, looking archly into his face, which had not learnt such impenetrability as poor Lenore's.
Her impenetrability ruffled Lady Tyrrell; but the answer was softer than ever.
If I did not have this sense, I would not know about impenetrability or about matter.
At bottom, even this is not so; I know that they are particles of matter only through their impenetrability, but the impenetrability I know only through my sense of touch and my muscle sense.
Yet we do not discover in this idea, either impenetrability or any of the properties of bodies; but rather on the contrary, we find a capacity indifferent to them all.
There are no two such bodies in infinite and indivisible extension; therefore there is no impenetrability in this extension.
In that case, impenetrability can only be a certain relation either of bodies or of ideas.
Impenetrability is that property of bodies by which two or more cannot be in the same place at the same time.
Therefore, geometrical impenetrability is no argument in favor of physical impenetrability; for the former exists only in case it is presupposed or required under pain of contradiction.
On this supposition, I maintain that there is no contradiction in making bodies penetrable, and that an analysis of this matter proves that the impenetrability of bodies is not essential.
