“Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer”

— Johannes Kepler, book Astronomia nova

As quoted by Bryant, ibid.
Astronomia nova (1609)
Context: Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer, either by its own nature, or by accidental heat. And it is not to be thought that light bodies are escaping to the surface of the universe while they are carried upwards, or that they are not attracted by the earth. They are attracted, but in a less degree, and so are driven outwards by the heavy bodies; which being done, they stop, and are kept by the earth in their own place.

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Johannes Kepler51

German mathematician, astronomer and astrologer 1571–1630

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“Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer, either by its own nature, or by accidental heat. And it is not to be thought that light bodies are escaping to the surface of the universe while they are carried upwards, or that they are not attracted by the earth. They are attracted, but in a less degree, and so are driven outwards by the heavy bodies; which being done, they stop, and are kept by the earth in their own place.”

Johannes Kepler book Mysterium Cosmographicum

As translated and quoted by Bryant, ibid.
Mysterium Cosmographicum (1596), Astronomia nova (1609)

“The first corporeal form, which some call corporeity, I hold to be light.”

Robert Grosseteste (1175–1253) English bishop and philosopher

De Luce seu de Inchoatione Formarum (c. 1215-1220)
Context: The first corporeal form, which some call corporeity, I hold to be light. For light of its own nature diffuses itself in all directions, so that from a point of light a sphere of light of any size may be instantly generated, provided an opaque body does not get in the way. Corporeity is what necessarily follows the extension of matter in three dimensions, since each of these, that is corporeity and matter, is a substance simple in itself and lacking all dimensions. But simple form in itself and in dimension lacking matter and dimension, it was impossible for it to become extended in every direction except by multiplying itself and suddenly diffusing itself in every direction and in its diffusion extending matter; since it is not possible for form to do without matter because it is not separable, nor can matter itself be purged of form. And, in fact, it is light, I suggest, of which this operation is part of the nature, namely, to multiply itself and instantaneously diffuse itself in every direction. Therefore, whatever it is that produces this operation is either light itself or something that produces this operation in so far as it participates in light, which produces it by its own nature. Corporeity is therefore either this light, or is what produces the operation in question and produces dimensions in matter in so far as it participates in this light itself and acts by virtue of this same light. But for the first form to produce dimensions in matter by virtue of a subsequent form is impossible. Therefore light is not the form succeeding this corporeity, but is this corporeity itself.

“I hold that the first form of a body is the first corporeal mover. But this is light, which as it multiplies itself and expands without the body of matter moving with it, makes its passage instantaneously through the transparent medium and is not motion but a state of change. But, indeed, when light is expanding itself in different directions it is incorporated with matter, if the body of matter extends with it, and it makes a rarefaction or augmentation of matter; for when light is itself charged with the body of matter, it produces condensation or rarefaction. So when light generates itself in one direction drawing matter with it, it produces local motion; and when light within matter is sent out and what is outside is sent in, it produces qualitative change. From this it is clear that corporeal motion is a multiplicative power of light, and this is a corporeal and natural appetite.”

Robert Grosseteste (1175–1253) English bishop and philosopher

see De Luce Tr. Ludwig Baur (1912) pp. 51-52
De Luce seu de Inchoatione Formarum (c. 1215-1220)

“…strictly speaking, tone is the relative lightness and darkness due to the effect of light governed by atmosphere, and has nothing to do with the relative lightness and darkness or relative value with which various colours appear when compared with each other.”

Alfred Horsley Hinton (1863–1908) British photographer

Source: Practical Pictorial Photography, 1898, Tone and atmoshphere, p. 47

“A comparative social science requires a generalized system of concepts which will enable the scientific observer to compare and contrast large bodies of concretely different social phenomena in consistent terms.”

David Aberle (1918–2004) anthropologist

David Aberle, Albert K. Cohen, A. K. Davis, Marion J. Levy Jr. and Francis X. Sutton, (1950). T"he functional prerequisites of a society." Ethics, 60(2), p. 100; cited in: Neil J. Smelser (2013), Comparative Methods in the Social Sciences. p. 189

Albert K. Cohen (1918–2014) American criminologist

Marion J. Levy Jr. (1918–2002) American sociologist

“Absolutely nothing visible to the eye provides a reason for or even evidence of those terrifying shifts which can in a matter of moments reconstitute a simple path into an extremely complicated one.”

Mark Z. Danielewski book House of Leaves

Source: House of Leaves

“I hope.... to paint some in a lighter gamut, more flesh and blood, but, at the same time, I am trying to get a still stronger soft soap and copper-like effect. In reality I daily see, in the gloomy huts, effects against the light or in the evening twilight.... which I compare to soft soap and brass color of a worn-out 10 centime piece.”

Vincent Van Gogh (1853–1890) Dutch post-Impressionist painter (1853-1890)

Quote in his letter to brother Theo, from Nuenen, The Netherlands, June 1885; as quoted in Vincent van Gogh, edited by Alfred H. Barr; Museum of Modern Art, New York, 1935 https://www.moma.org/documents/moma_catalogue_1996_300061887.pdf, (letter 410) p. 31 <br class="br">1880s, 1885

“The inconsistency of first explaining matter by atoms and then explaining atoms by matter was only slowly realised, and it is only comparatively recently that we have come to see that there is nothing paradoxical in the fact that an atom or an electron, which are not matter, may have properties different from those of matter, and must be allowed to do things that a material particle could not do.”

Willem de Sitter (1872–1934) Dutch cosmologist

Kosmos (1932), Above is Beginning Quote of the Last Chapter: Relativity and Modern Theories of the Universe -->

“Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer”

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Johannes Kepler51

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