“On the most usual assumption, the universe is homogeneous on the large scale, i. e. down to regions containing each an appreciable number of nebulae. The homogeneity assumption may then be put in the form: An observer situated in a nebula and moving with the nebula will observe the same properties of the universe as any other similarly situated observer at any time.”

— Hermann Bondi

Sir Hermann Bondi, "Review of Cosmology," Monthly Notices of the Royal Astronomical Society 1948, p. 107-8, as cited in: Hermann Friedmann. Wissenschaft und Symbol, Biederstein, 1949, p. 472

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Hermann Bondi 5

British mathematician and cosmologist 1919–2005

Howard P. Robertson (1903–1961) American mathematician and physicist

As quoted by Gerald James Whitrow, The Structure of the Universe: An Introduction to Cosmology (1949)

“The "universe" is an hypothesis, like the atom, and must be allowed the freedom to have properties and to do things which would be contradictory and impossible for a finite material structure. What we observe are the stars and nebulae constituting "our neighbourhood." All that goes beyond that, in time or in space, or both, is pure extrapolation. The conclusions derived about the expanding universe depend on the assumed homogeneity and isotropy, i. e. on the hypothesis that the observed finite material density and expansion of our neighbourhood are not local phenomena, but properties of the "universe." It is not inconceivable that this hypothesis may at some future stage of the development of science have to be given up, or modified, or at least differently interpreted.”

Willem de Sitter (1872–1934) Dutch cosmologist

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

“Many natural patterns, such as the arrangement of buds on a stem, accord with the series of Fibonacci numbers, and Fibonacci spirals are also observed in spiral nebulae. There are, moreover, no flying pigs …”

Mary Midgley (1919–2018) British philosopher and ethicist

Review of 'What Darwin Got Wrong' by Jerry Fodor and Massimo Piattelli Palmarini (2010) http://www.theguardian.com/books/2010/feb/06/what-darwin-got-wrong.

“Located in some distant nebula I do what I do so that the universal balance I’m a part of won’t lose its balance.”

Antonio Porchia (1885–1968) Italian Argentinian poet

Situado en alguna nebulosa lejana hago lo que hago, para que el equilibrio universal de que soy parte no pierda el equilibrio.
Voces (1943)

“Carefully observe oneself and one's situation, carefully observe others, and carefully observe one's environment”

Kanō Jigorō (1860–1938) Japanese educator and judoka

Budo Secrets (2002)
Context: Jigoro Kano's Five Principles of Judo:
1. Carefully observe oneself and one's situation, carefully observe others, and carefully observe one's environment,
2. Seize the initiative in whatever you undertake,
3. Consider fully, act decisively,
4. Know when to stop,
5. Keep to the middle.

“The number of compound nebulæ… being so considerable, it will follow, that if they owe their origin to the breaking up of some former extensive nebulosities of the same nature with those which have been shewn to exist at present, we might expect that the number of separate nebulæ should far exceed the former, and that moreover these scattered nebulas should be found not only in great abundance, but also in proximity or continuity with each other… Now this is exactly what by observation, we find to be the state of the heavens.”

William Herschel (1738–1822) German-born British astronomer, technical expert, and composer

p, 125
Astronomical Observations relating to the Construction of the Heavens... (1811)

“There could not be a non-mathematical Universe containing living observers.”

John D. Barrow (1952–2020) British scientist

The Artful Universe (1995)
Context: Where there is life there is a pattern, and where there is a pattern there is mathematics. Once that germ of rationality and order exists to turn a chaos into a cosmos, then so does mathematics. There could not be a non-mathematical Universe containing living observers.<!-- Ch. 5, p. 230

“To remove these one had to account for an “observer” (that is at least for one subject):
(i) Observations are not absolute but relative to an observer’s point of view (i. e., his coordinate system: Einstein);
(ii) Observations affect the observed so as to obliterate the observer’s hope for prediction (i. e., his uncertainty is absolute: Heisenberg).
After this, we are now in the possession of the truism that a description (of the universe) implies one who describes it”

Heinz von Foerster (1911–2002) Austrian American scientist and cybernetician

observes it
Source: 1980s, Notes on an epistemology for living things, 1981, p.258

“With respect to the present time, there are few persons who unite the qualifications of good observers with a situation favourable for accurate observation.”

Jean-Baptiste Say (1767–1832) French economist and businessman

Source: A Treatise On Political Economy (Fourth Edition) (1832), Introduction, p. xix

“We may… have surmised nebulae to be no other than clusters of stars disguised by their very great distance, but a longer experience and better acquaintance with the nature of nebulae, will not allow a general admission of such a principle, although undoubtedly a cluster of stars may assume a nebulous appearance when it is too remote for us to discern the stars of which it is composed.”

William Herschel (1738–1822) German-born British astronomer, technical expert, and composer

p, 125
Astronomical Observations relating to the Construction of the Heavens... (1811)

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Hermann Bondi 5

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