Impenetrability

Definition and stakes

Jaime Luciano Balmes,  Fundamental Philosophy, Vol. 1…

“ Can penetration exist in reality? Can one ball of metal, for example, enter another ball of metal, as we make one geometrical ball enter another? We are not treating of the regular order of things which is repugnant to such suppositions, but of the essence of things. 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. ”
Source: Gutenberg

Portrait of Samuel Taylor Coleridge Samuel Taylor Coleridge,  Biographia Literaria; or, Biographical Sketches of My Literary Life and Opinions (1817)

“ For since impenetrability is intelligible only as a mode of resistance; its admission places the essence of matter in an act or power, which it possesses in common with spirit; and body and spirit are therefore no longer absolutely heterogeneous, but may without any absurdity be supposed to be different modes, or degrees in perfection, of a common substratum. ”
Source: Wikisource

Portrait of Isaac Newton Isaac Newton,  The Mathematical Principles of Natural Philosophy…

“ That abundance of bodies are hard we learn by experience. And because the hardness of the whole arises from the hardness of the parts, we therefore justly infer the hardness of the undivided particles not only of the bodies we feel but of all others. That all bodies are impenetrable, we gather not from reason, but from sensation. The bodies which we handle we find impenetrable, and thence conclude impenetrability to be an universal property of all bodies whatsoever. ”
Source: Wikisource

Get perspective with Kwize: daily news enlightened by great literature