„The centre of gravity of a parallelogram is the point of intersection of its diagonals.“

—  Archimedes, buch On the Equilibrium of Planes

Book 1, Proposition 10.
On the Equilibrium of Planes

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antiker griechischer Mathematiker, Physiker und Ingenieur -287 - -212 v.Chr

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„The centre of gravity of any parallelogram lies on the straight line joining the middle points of opposite sides.“

—  Archimedes, buch On the Equilibrium of Planes

Book 1, Proposition 9.
On the Equilibrium of Planes

„If two equal weights have not the same centre of gravity, the centre of gravity of both taken together is at the middle point of the line joining their centres of gravity.“

—  Archimedes, buch On the Equilibrium of Planes

Book 1, Proposition 4.
On the Equilibrium of Planes

„The centre of gravity of any cylinder is the point of bisection of the axis.“

—  Archimedes, buch The Method of Mechanical Theorems

Proposition presumed from previous work.
The Method of Mechanical Theorems

„It follows at once from the last proposition that the centre of gravity of any triangle is at the intersection of the lines drawn from any two angles to the middle points of the opposite sides respectively.“

—  Archimedes, buch On the Equilibrium of Planes

Book 1, Proposition 14.
On the Equilibrium of Planes

„The centre of gravity of any cone is [the point which divides its axis so that] the portion [adjacent to the vertex is] triple“

—  Archimedes, buch The Method of Mechanical Theorems

of the portion adjacent to the base
Proposition presumed from previous work.
The Method of Mechanical Theorems

„In any triangle the centre of gravity lies on the straight line joining any angle to the middle point of the opposite side.“

—  Archimedes, buch On the Equilibrium of Planes

Book 1, Proposition 13.
On the Equilibrium of Planes

„Opinion is like a pendulum and obeys the same law. If it goes past the centre of gravity on one side, it must go a like distance on the other; and it is only after a certain time that it finds the true point at which it can remain at rest.“

—  Arthur Schopenhauer, buch Parerga und Paralipomena

Vol. 2 "Further Psychological Observations" as translated in Essays and Aphorisms (1970), as translated by R. J. Hollingdale
Parerga and Paralipomena (1851), Counsels and Maxims

„Grasping spatial gestalts as figures is mathematizing of space. Arranging the properties of a parallelogram such that a particular one pops up to base the others on it in order to arrive at a definition of parallelogram, that is mathematizing the conceptual field of the parallelogram.“

—  Hans Freudenthal Dutch mathematician 1905 - 1990

Quelle: Mathematics as an Educational Task (1973), p. 133

„The centre of gravity of any hemisphere [is on the straight line which] is its axis, and divides the said straight line in such a way that the portion of it adjacent to the surface of the hemisphere has to the remaining portion the ratio which 5 has to 3.“

—  Archimedes, buch The Method of Mechanical Theorems

Proposition 6.
The Method of Mechanical Theorems

„In its most general form and from the point of view of physics, love is the internal, affectively apprehended, aspect of the affinity which links and draws together the elements of the world, centre to centre.“

—  Pierre Teilhard De Chardin French philosopher and Jesuit priest 1881 - 1955

This is how it has been understood by the great philosophers from Plato, the poet, to Nicolas of Cusa and other representatives of frigid scholasticism. Once this definition has been accepted, it gives rise to a series of important consequences. Love is power of producing inter-centric relationship. It is present, therefore (at least in a rudimentary state), in all the natural centres, living and pre-living, which make up the world; and it represents, too, the most profound, most direct, and most creative form of inter-action that it is possible to conceive between those centres. Love, in fact, is the expression and the agent of universal synthesis.
pp. 70–71 https://archive.org/stream/ActivationOfEnergy/Activation_of_Energy#page/n65/mode/2up
Activation of Energy (1976)

„The earth is not in the centre of the Sun's orbit nor at the centre of the universe, but in the centre of its companion elements, and united with them.“

—  Leonardo Da Vinci Italian Renaissance polymath 1452 - 1519

XV Astronomy
Kontext: The earth is not in the centre of the Sun's orbit nor at the centre of the universe, but in the centre of its companion elements, and united with them. And any one standing on the moon, when it and the sun are both beneath us, would see this our earth and the element of water upon it just as we see the moon, and the earth would light it as it lights us.

„If we are a metaphor of the universe, the human couple is the metaphor par excellence, the point of intersection of all forces and the seed of all forms.“

—  Octavio Paz Mexican writer laureated with the 1990 Nobel Prize for Literature 1914 - 1998

André Breton or the Quest of the Beginning
Quelle: Alternating Current (1967)
Kontext: If we are a metaphor of the universe, the human couple is the metaphor par excellence, the point of intersection of all forces and the seed of all forms. The couple is time recaptured, the return to the time before time.

„They say gravity is the centre of attraction; I rather think that noise is. Nothing so soon assembles the inhabitants of a house as a loud and sudden noise : …“

—  Letitia Elizabeth Landon English poet and novelist 1802 - 1838

Heath's book of Beauty, 1833 (1832)

„I am an individual … a circle touching and intersecting my neighbours at certain points, but nowhere corresponding, nowhere blending.“

—  Richard Francis Burton British explorer, geographer, translator, writer, soldier, orientalist, cartographer, ethnologist, spy, linguist, poet,… 1821 - 1890

The Kasîdah of Hâjî Abdû El-Yezdî (1870), Note I : Hâjî Abdû, The Man
Kontext: I am an individual … a circle touching and intersecting my neighbours at certain points, but nowhere corresponding, nowhere blending. Physically I am not identical in all points with other men. Morally I differ from them: in nothing do the approaches of knowledge, my five organs of sense (with their Shelleyan "interpenetration"), exactly resemble those of any other being. Ergo, the effect of the world, of life, of natural objects, will not in my case be the same as with the beings most resembling me. Thus I claim the right of creating or modifying for my own and private use, the system which most imports me; and if the reasonable leave be refused to me, I take it without leave.
But my individuality, however all-sufficient for myself, is an infinitesimal point, an atom subject in all things to the Law of Storms called Life. I feel, I know that Fate is. But I cannot know what is or what is not fated to befall me. Therefore in the pursuit of perfection as an individual lies my highest, and indeed my only duty, the "I" being duly blended with the "We." I object to be a "self-less man," which to me denotes an inverted moral sense. I am bound to take careful thought concerning the consequences of every word and deed. When, however, the Future has become the Past, it would be the merest vanity for me to grieve or to repent over that which was decreed by universal Law.

„the gravity of a substance depends not on the amount of its weight, but on its nature.“

—  Vitruvius, buch De architectura

Quelle: De architectura (The Ten Books On Architecture) (~ 15BC), Book VII, Chapter VIII, Sec. 3

„The sequence of different positions of the same particle at different times forms a one-dimensional continuum in the four-dimensional space-time, which is called the world-line of the particle. All that physical experiments or observations can teach us refers to intersections of world-lines of different material particles, light-pulsations, etc., and how the course of the world-line is between these points of intersection is entirely irrelevant and outside the domain of physics. The system of intersecting world-lines can thus be twisted about at will, so long as no points of intersection are destroyed or created, and their order is not changed. It follows that the equations expressing the physical laws must be invariant for arbitrary transformations.“

—  Willem de Sitter Dutch cosmologist 1872 - 1934

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

„The times when the centre of gravity of political development and the crystallising agent of capitalist contradictions lay on the European continent, are long gone by. To-day Europe is only a link in the tangled chain of international connections and contradictions.“

—  Rosa Luxemburg Polish Marxist theorist, socialist philosopher, and revolutionary 1871 - 1919

Peace Utopias (1911)

„The poetic method sees the centre of consciousness as the point where all that is significant in the surrounding world becomes aware and transformed“

—  Stephen Spender English poet and man of letters 1909 - 1995

Quelle: The Struggle of the Modern (1963), Ch. 5
Kontext: The prose method might be described as that where the writer provides a complete description of all those material factors in the environment which condition his characters. The poetic method sees the centre of consciousness as the point where all that is significant in the surrounding world becomes aware and transformed; the prose method requires a description of that world in order to explain the characteristics of the people in it. The hero of the poetic method is Rimbaud; of the prose method, Balzac.

„Centre of all Its various Pow'r and SkillIs One Divine, Immutable Good Will.“

—  John Byrom Poet, inventor of a shorthand system 1692 - 1763

The True Grounds Of Eternal And Immutable Rectitude" St. 8
Miscellaneous Poems (1773)
Kontext: Endless Perfections after all conspire,