“There can be no complete and permanent reform of the civil service until public opinion emancipates congressmen from all control and influence over government patronage. Legislation is required to establish the reform. No proper legislation is to be expected as long as members of Congress are engaged in procuring offices for their constituents.”

Source: Reform or Revolution (1899), Ch. 8

Pages 22–23.
"The Scope and Method of Political Economy in the Light of the 'Marginal' Theory of Value and Distribution" (1914), §II
Context: Social reformers and legislators will never be economists, and they will always work on economic theory of one kind or another. They will quote and apply such dicta as they can assimilate, and such acknowledged principles as seem to serve their turn. Let us suppose there were a recognised body of economic doctrine the truth and relevancy of which perpetually revealed itself to all who looked below the surface, which taught men what to expect and how to analyse their experience; which insisted at every turn on the illuminating relation between our conduct in life and our conduct in business; which drove the analysis of our daily administration of our individual resources deeper, and thereby dissipated the mist that hangs about our economic relations, and concentrated attention upon the uniting and all-penetrating principles of our study. Economics might even then be no more than a feeble barrier against passion, and might afford but a feeble light to guide honest enthusiasm, but it would exert a steady and a cumulative pressure, making for the truth. While the experts worked on severer methods than ever, popularisers would be found to drive homely illustrations and analogies into the general consciousness; and the roughly understood dicta bandied about in the name of Political Economy would at any rate stand in some relation to truth and to experience, instead of being, as they too often are at present, a mere armoury of consecrated paradoxes that cannot be understood because they are not true, that every one uses as weapons while no one grasps them as principles.

Article 4
Virginia Declaration of Rights (1776)

We boast of the freedom enjoyed by our people above all other peoples. But it is difficult to reconcile that boast with a state of the law which, practically, puts the brand of servitude and degradation upon a large class of our fellow-citizens, our equals before the law. The thin disguise of "equal" accommodations for passengers in railroad coaches will not mislead anyone, nor atone for the wrong this day done.
1890s, Plessy v. Ferguson (1896)

President Ilham Aliyev's opening letter to the participants of the international "Fighting corruption: international standards and national experience" conference in Baku (30 June 2014) https://en.trend.az/azerbaijan/politics/2289807.html
Anti-corruption policy

"Special Message to the Congress on Federal Pay Reform (55)" (20 February 1962) http://www.jfklibrary.org/Research/Research-Aids/Ready-Reference/JFK-Quotations.aspx<!-- Public Papers of the President: John F. Kennedy, 1962 -->
1962
Context: The success of this Government, and thus the success of our Nation, depends in the last analysis upon the quality of our career services. The legislation enacted by the Congress, as well as the decisions made by me and by the department and agency heads, must all be implemented by the career men and women in the Federal service. In foreign affairs, national defense, science and technology, and a host of other fields, they face problems of unprecedented importance and perplexity. We are all dependent on their sense of loyalty and responsibility as well as their competence and energy.

From an essay in Cruelties of Civilization (1897) as quoted in Roderick Nash, The Rights of Nature, University of Wisconsin Press, 1989, p. 29 https://books.google.it/books?id=f9tJZz6jDUIC&pg=PA29.

1920s, Speech at College of William and Mary (May 15, 1926)

Principles and Priorities : Programme for Government (September 5, 2007)