Letter to George Washington (November 1779)
“The command of the North River is an object of such importance, that the force and supplies necessary for this purpose must be had at all events. The force requisite for these garrisons, I suppose, has been very judiciously calculated by General Duportail; and I imagine there cannot be any great variation from his report.”
Letter to George Washington (November 1779)
Help us to complete the source, original and additional information
Nathanael Greene 126
American general in the American Revolutionary War 1742–1786Related quotes
Letter to George Washington (August 1778)
p, 125
1850s, Autobiographical Sketch Written for Jesse W. Fell (1859)
Source: Participant observer, 1994, p. 196; As cited in: Ickis (2014)
Source: Science and Hypothesis (1901), Ch. VI: The Classical Mechanics (1905) Tr. https://books.google.com/books?id=5nQSAAAAYAAJ George Bruce Halstead
Context: 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
Letter to George Washington (August 1778)
Gantt (1910) Work, Wages, and Profits: Their Influence on the Cost of Living, p. 116. cited in: Daniel A. Wren (1994) The evolution of management thought. p. 137.
Work, Wages, and Profits: Their Influence on the Cost of Living. 1910
Letter to George Washington (May 1776)