# „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

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##### Archimedes4
antiker griechischer Mathematiker, Physiker und Ingenieur -287 - -212 v.Chr

## Ähnliche Zitate

### „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

### „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

### „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

### „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

### „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

### „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

### „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

### „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)

### „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)

### „Proposition 14. The straight line joined from the centre of the earth to the centre of the moon has to the straight line cut off from the axis towards the centre of the moon by the straight line subtending the (circumference) within the earth's shadow a ratio greater than that which 675 has to 1.“

—  Aristarchus of Samos ancient Greek astronomer and mathematician

p, 125
On the Sizes and Distances of the Sun and the Moon (c. 250 BC)

### „I was joined by Carlo Rovelli, and we were able to make a full-fledged quantum theory of gravity… This became loop quantum gravity.“

—  Lee Smolin American cosmologist 1955

"Loop Quantum Gravity," The New Humanists: Science at the Edge (2003)

### „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

### „Physics depends on a universe infinitely centred on an equals sign.“

—  Mark Z. Danielewski, buch House of Leaves

Quelle: House of Leaves

### „Irony is jesting hidden behind gravity. Humor is gravity concealed behind the jest.“

—  John Weiss United States clergyman and abolitionist 1818 - 1879

Wit, Humor, and Shakespeare: Twelve essays (1876), p. 63.

### „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)

### „Two forces rule the universe: light and gravity.“

—  Simone Weil French philosopher, Christian mystic, and social activist 1909 - 1943

### „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

The Notebooks of Leonardo da Vinci (1883), 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.

### „Gravity’s books have got to balance.“

—  Robert A. Heinlein, buch Farmer in the Sky

Quelle: Farmer in the Sky (1950), Chapter 17, “Disaster” (p. 177)