“Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.”
Laws of Motion, I
Philosophiae Naturalis Principia Mathematica (1687)
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Isaac Newton 171
British physicist and mathematician and founder of modern c… 1643–1727Related quotes

“That the state is an entity and in fact the decisive entity rests upon its political character.”
The Concept of the Political (1927)

“Every state must be aware that its peace, its security rests on its own sword.”
All the King's Men' A search for the colonial ideas of some advisers and "accomplices" of Leopold II (1853-1892). (Hannes Vanhauwaert), 5. A prospectus by the military Chazal and Brialmont, The military centipede Henri-Alexis Brialmont (1821-1893) http://www.ethesis.net/leopold_II/leopold_II.htm#2.%20 CROKAERT, P. Brialmont, 183.
Undated

The Notebooks of Leonardo Da Vinci (1938), XVII Flight
Source: "The theory of economic regulation," 1971, p. 3; Lead paragraph
Context: The state --the machinery and power of the state-- is a potential resource or threat to every industry in the society. With its power to prohibit or compel, to take or give money, the state can and does selectively help or hurt a vast number of industries. That political juggernaut, the petroleum industry, is an immense consumer of political benefits, and simultaneously the underwriters of marine insurance have their more modest repast. The central tasks of the theory of economic regulation are to explain who will receive the benefits or burdens of regulation, what form regulation will take, and the effects of regulation upon the allocation of resources.

The Education of Henry Adams (1907)
Source: Pictures from an Institution (1954) [novel], Ch. 4, p. 181