Social Principias
Three representative examples of semi-neighborhood-like grasping-to-be "Social Principias", namely: Leon Winiarski's Essay on Social Mechanics (1898), Vilfredo Pareto’s Treatise on General Sociology (1912), and Mirza Beg’s New Dimensions in Sociology: a Physico-Chemical Approach to Human Behavior (1987).
In hmolscience, Social Principia is a term used in reference to books that grasp at doing for social mechanics what Isaac Newton’s 1686 Principia, or The Mathematical Principles of Natural Philosophy, did for celestial mechanics, namely to formulate the laws of motion explaining observed movement phenomena.

Overview
No one, to note, has ever laid claim to having produced a “social Principia”, but among the top three dozen “social Newtons”, references and or jibes have been made or alluded to.

In 1874, reverend Moritz Kaufmann, in his Socialism: its Nature, its Dangers, and its Remedies Considered, was referring to the work of Charles Fourier as an attempt at a social Principia: [1]

“Happiness he acknowledges is ‘our being's end and aim’; and the only true science which leads to its attainment is sociology. As the doctrine of the material movements in the universe has been fixed by Newton's discoveries, so too the laws which regulate the movements in the social world must first be ascertained before we can hope to render mankind happy. To become such a social Newton was undoubtedly Fourier's ambition, and this is the fundamental law of his social Principia.”

In 1875, American theological philosopher Robert Wright published Principia: Basis of Social Science, the first attempt at a so-called Social Principia, wherein he grappled with Auguste Comte, Henry Carey, and Charles Fourier, in efforts to expunge the “atheism” aspects of the latter so to make a theological-framed politics for post-civil war America.

Discussion
In modern retrospect, we might classify: Leon Winiarski's Essay on Social Mechanics (1898), Vilfredo Pareto’s Treatise on General Sociology (1912), and Mirza Beg’s New Dimensions in Sociology: a Physico-Chemical Approach to Human Behavior (1987) as two in the neighborhood examples of “social Principias”, for lack of better candidates.

Quotes
The following are related quotes:

“The Declaration of Independence, therefore, is a social Principia, pretending to prescribe a social physics for mankind. It was used by Jefferson to justify the American Revolution, but it clearly is applicable to all men at all times in all conditions.”
— Author (1977), “Article” (ΡΊ), Cornell Review, Issues 1-4

References
1. Kaufmann, M. (1874). Socialism: its Nature, its Dangers, and its Remedies Considered (pg. 119). Henry S. King & Co.

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