Hermann von Helmholtz quote: “The quantity of force which can be brought into action in the whole of Nature is unchangeable, and can neither be incre…”

“I must now explain what I mean by the quantity of action. A certain action is necessary for the carrying of a body from one point to another: this action depends on the velocity which the body has and the space which it describes; but it is neither the velocity nor the space taken separately. The quantity of action varies directly as the velocity and the length of path described; it is proportional to the sum of the spaces, each being multiplied by the velocity with which the body describes it. It is this quantity of action which is here the true expense (dépense) of nature, and which she economizes as much as possible in the motion of light.”

Pierre Louis Maupertuis (1698–1759) French mathematician, philosopher and man of letters

Histoire de l'Academie (1744) p. 423; Les Oeuvres De Mr. De Maupertuis (1752) vol. iv p. 17; as quoted by Philip Edward Bertrand Jourdain, The Principle of Least Action https://books.google.com/books?id=y3UVAQAAIAAJ (1913) p. 5.

“LABOUR, like all other things which are purchased and sold, and which may be increased or diminished in quantity, has its natural and its market price. The natural price of labour is that price which is necessary to enable the labourers, on with another, to subsist and to perpetuate their race, without either increase or diminution.”

David Ricardo (1772–1823) British political economist, broker and politician

Source: The Principles of Political Economy and Taxation (1821) (Third Edition), Chapter V, On Wages, p. 52

“Books are published with an expectation, if not a desire, that they will be criticised in reviews, and if deemed valuable that parts of them will be used as affording illustrations by way of quotation, or the like, and if the quantity taken be neither substantial nor material, if, as it has been expressed by some Judges, "a fair use" only be made of the publication, no wrong is done and no action can be brought.”

William Wood, 1st Baron Hatherley (1801–1881) Lord Chancellor of Great Britain

Chatterton v. Cave (1877), L. R. 3 App. Cas. 492.

“The power of God can be detected neither in the world of nature nor in the souls of men. It must not be confounded with any high, exalted, force, known or knowable.”

Karl Barth book The Epistle to the Romans

The Epistle to the Romans (1918; 1921)

“When… we have a series of values of a quantity which continually diminish, and in such a way, that name any quantity we may, however small, all the values, after a certain value, are severally less than that quantity, then the symbol by which the values are denoted is said to diminish without limit. And if the series of values increase in succession, so that name any quantity we may, however great, all after a certain point will be greater, then the series is said to increase without limit. It is also frequently said, when a quantity diminishes without limit, that it has nothing, zero or 0, for its limit: and that when it increases without limit it has infinity or ∞ or 1⁄0 for its limit.”

Augustus De Morgan (1806–1871) British mathematician, philosopher and university teacher (1806-1871)

Introductory Chapter, pp.9-10
The Differential and Integral Calculus (1836)

“When… we have a series of values of a quantity which continually diminish, and in such a way, that name any quantity we may, however small, all the values, after a certain value, are severally less than that quantity, then the symbol by which the values are denoted is said to diminish without limit. And if the series of values increase in succession, so that name any quantity we may, however great, all after a certain point will be greater, then the series is said to increase without limit.”

Augustus De Morgan (1806–1871) British mathematician, philosopher and university teacher (1806-1871)

It is also frequently said, when a quantity diminishes without limit, that it has nothing, zero or 0, for its limit: and that when it increases without limit it has infinity or ∞ or 1&frasl;0 for its limit.
The Differential and Integral Calculus (1836)

“The reason fat men are good natured is they can neither fight nor run.”

Theodore Roosevelt (1858–1919) American politician, 26th president of the United States

“Neither the chains of dictatorship nor the fetters of oppression can keep down the forces of freedom for long.”

Angela Merkel (1954) Chancellor of Germany

Remarks by President Obama and Chancellor Merkel in an Exchange of Toasts on June 07, 2011. http://www.newsroomamerica.com/story/137358/remarks_by_president_obama_and_chancellor_merkel_in_an_exchange_of_toasts.html
Context: We see that living in freedom and defending freedom are two sides of one and the same coin, for the precious gift of freedom doesn’t come naturally, but has to be fought for, nurtured, and defended time and time again. Sometimes this may seem like an endless fight against windmills. But you see, my personal experience is a quite different one. What we dare not dream of today may well become reality tomorrow. Neither the chains of dictatorship nor the fetters of oppression can keep down the forces of freedom for long.

“Since truth and constancy are vain,
Since neither love, nor sense of pain,
Nor force of reason, can persuade,
Then let example be obey'd.”

George Granville, 1st Baron Lansdowne (1666–1735) 1st Baron Lansdowne

To Myra; reported in Hoyt's New Cyclopedia Of Practical Quotations (1922), "Example", p. 242-43.

“They have force and will be able to dominate us, but social processes can be arrested by neither crime nor force. History is ours, and people make history.”

Salvador Allende (1908–1973) Chilean physician and politician

Final address (1973)
Context: Placed in a historic transition, I will pay for loyalty to the people with my life. And I say to them that I am certain that the seeds which we have planted in the good conscience of thousands and thousands of Chileans will not be shriveled forever. They have force and will be able to dominate us, but social processes can be arrested by neither crime nor force. History is ours, and people make history.

“The quantity of force which can be brought into action in the whole of Nature is unchangeable, and can neither be increased nor diminished.”

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Hermann von Helmholtz 12

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