„Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying.“

As quoted in Visions : How Science Will Revolutionize the Twenty-First Century (1999) by Michio Kaku, p. 295
2000s and attributed from posthumous publications

Estratto da Wikiquote. Ultimo aggiornamento 03 Giugno 2021. Storia
Arthur C. Clarke photo
Arthur C. Clarke11
autore di fantascienza e inventore britannico 1917 - 2008

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„Don't we all live in our heads? Where else could we possibly exist? Our brainsthe universe.“

—  Kate DiCamillo American children's writer 1964

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„We are either all equally free, or we are not free.“

—  Alan Charles Kors American academic 1943

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„When shall we say two forces are equal?“

—  Henri Poincaré, libro Science and Hypothesis

Origine: Science and Hypothesis (1901), Ch. VI: The Classical Mechanics (1905) Tr. https://books.google.com/books?id=5nQSAAAAYAAJ George Bruce Halstead
Contesto: What is mass? According to Newton, it is the product of the volume by the density. According to Thomson and Tait, it would be better to say that density is the quotient of the mass by the volume. What is force? It, is replies Lagrange, that which moves or tends to move a body. It is, Kirchhoff will say, the product of the mass by the acceleration. But then, why not say the mass is the quotient of the force by the acceleration?
These difficulties are inextricable.
When we say force is the cause of motion, we talk metaphysics, and this definition, if one were content with it, would be absolutely sterile. For a definition to be of any use, it must teach us to measure force; moreover that suffices; it is not at all necessary that it teach us what force is in itself, nor whether it is the cause or the effect of motion.
We must therefore first define the equality of two forces. When shall we say two forces are equal? It is, we are told, when, applied to the same mass, they impress upon it the same acceleration, or when, opposed directly one to the other, they produce equilibrium. This definition is only a sham. A force applied to a body can not be uncoupled to hook it up to another body, as one uncouples a locomotive to attach it to another train. It is therefore impossible to know what acceleration such a force, applied to such a body, would impress upon such an other body, if it were applied to it. It is impossible to know how two forces which are not directly opposed would act, if they were directly opposed.
We are... obliged in the definition of the equality of the two forces to bring in the principle of the equality of action and reaction; on this account, this principle must no longer be regarded as an experimental law, but as a definition.<!--pp.73-74

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„The system of banking we have both equally and ever reprobated.“

—  Thomas Jefferson 3rd President of the United States of America 1743 - 1826

Letter to John Taylor (28 May 1816) ME 15:18: The Writings of Thomas Jefferson "Memorial Edition" (20 Vols., 1903-04) edited by Andrew A. Lipscomb and Albert Ellery Bergh, Vol. 15, p. 18
1810s
Contesto: The system of banking we have both equally and ever reprobated. I contemplate it as a blot left in all our Constitutions, which, if not covered, will end in their destruction, which is already hit by the gamblers in corruption, and is sweeping away in its progress the fortunes and morals of our citizens. Funding I consider as limited, rightfully, to a redemption of the debt within the lives of a majority of the generation contracting it; every generation coming equally, by the laws of the Creator of the world, to the free possession of the earth he made for their subsistence, unincumbered by their predecessors, who, like them, were but tenants for life.

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„We are not interested in the possibilities of defeat; they do not exist.“

—  Victoria of the United Kingdom British monarch who reigned 1837–1901 1819 - 1901

December 1899 letter to Arthur Balfour during the "Black Week" of the Boer War, as quoted in The Columbia Dictionary of Quotations (1993), p. 539 http://books.google.com/books?id=4cl5c4T9LWkC&lpg=PP1&pg=PA539#v=onepage&q&f=false.
According to Lady Gwendolen Cecil, it was a verbal statement to Mr. Balfour in Windsor Palace, as recorded in her biography of her Father, Life of Robert, marquis of Salisbury, volume 3 (1921), p. 191 http://archive.org/stream/lifeofrobertmarq03ceciuoft#page/190/mode/2up/search/we+are+not+interested+in+the+possibilities+of+defeat

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„No man ever praised two persons equally – and pleased them both.“

—  Arthur Helps British writer 1813 - 1875

Origine: Thoughts in the Cloister and the Crowd. 1901, p.25.

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„If we are alone in the Universe, it sure seems like an awful waste of space.“

—  Carl Sagan, Contact

This is a paraphrase of Sagan quoting Thomas Carlyle: "A sad spectacle. If they be inhabited, what a scope for misery and folly. If they be not inhabited, what a waste of space."
Sagan delivered this quote during the symposium on "Life Beyond Earth and the Mind of Man", held at Boston University (20 November 1972), published in Life Beyond Earth and the Mind of Man (1973) edited by Richard Berendzen; Life Beyond Earth and the Mind of Man (1975) National Archives video http://www.youtube.com/watch?v=cQeOp7a8QMI
Misattributed
Origine: Contact

„Physical processes alone will never completely explain the existence of the universe, life, and consciousness.“

—  Peter J. Carroll British occultist 1953

Origine: Liber Null & Psychonaut (1987), p. 151
Contesto: Physical processes alone will never completely explain the existence of the universe, life, and consciousness. Religious answers are just wishful thinking and wanton fabrication cast over a bottomless pit of ignorance. To explain their occult and mystical experiences, magicians are forced to develop models beyond the scope of materialistic or religious systems.

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