The foregoing considerations lead us to the very important conclusions, that matter is essentially force, and nothing but force, [p. 366] that matter, as popularly understood, does not exist, and is, in fact, philosophically inconceivable. When we touch matter, we only really experience sensations of resistance, implying repulsive force, and no other sense can give us such apparently solid proofs of reality of matter, as touch does. This conclusion, if kept constantly present in the mind, will be found to have a most important bearing on almost every high scientific and philosophical problem, especially on such as relate to our own conscious existence.
Google-1
Google-2
public domain