Sublime
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My own definition of “matter” may seem unsatisfactory; I should define it as what satisfies the equations of physics.
Bertrand Russell • History of Western Philosophy

as such. All matter originates and exists only by virtue of a force, which brings the particle of an atom to vibration and holds this most minute solar system of the atom together. We must assume behind this force the existence of a conscious and intelligent mind. This mind is the matrix of all matter.1
Peter Baksa • The Point of Power
As a man who has devoted his whole life to the most clear headed science, to the study of matter, I can tell you as a result of my research about atoms this much: There is no matter as such. All matter originates and exists only by virtue of a force, which brings the particle of an atom to vibration and holds this most minute solar system of the
... See morePeter Baksa • The Point of Power
In relativity, such an extended distribution of matter is called a fluid.
Sean M. Carroll • The Biggest Ideas in the Universe: Space, Time, and Motion
The Feynman Lectures on Physics Vol. I Ch. 1: Atoms in Motion
feynmanlectures.caltech.eduMattering means being important or significant. It also refers to a physical substance, as distinct from mind and spirit.
Karen O'Brien • You Matter More Than You Think: Quantum Social Change for a Thriving World
