“The rules followed are tight enough to produce a broad overlap in the decisions taken by all individuals and hence a convergence powerful enough to be labelled human nature.”

Writing for the court, Roe v. Wade, 410 U.S. 113, 153 (1973)

Source: The Dress Doctor

Aphorism 3
Novum Organum (1620), Book I

Source: One-Dimensional Man (1964), p. 7

VII, 31
Meditations (c. 121–180 AD), Book VII

Source: 1950s-1960s, Social Choice and Individual Values (1951), p. 7

Address to the British Association in Montreal (1884)
Context: Without encroaching upon grounds appertaining to the theologian and the philosopher, the domain of natural sciences is surely broad enough to satisfy the wildest ambition of its devotees. In other departments of human life and interest, true progress is rather an article of faith than a rational belief; but in science a retrograde movements is, from the nature of the case, almost impossible. Increasing knowledge brings with it increasing power, and great as are the triumphs of the present century, we may well believe that they are but a foretaste of what discovery and invention have yet in store for mankind. … The work may be hard, and the discipline severe; but the interest never fails, and great is the privilege of achievement.

"Anarchism" article in Encyclopedia Britannica (1910) "The Historical Development of Anarchism", as quoted in Anarchism: A Collection of Revolutionary Writings (1927), p. 288
Context: The best exponent of anarchist philosophy in ancient Greece was Zeno (342-267 or 270 B. C.), from Crete, the founder of the Stoic philosophy, who distinctly opposed his conception of a free community without government to the state-Utopia of Plato. He repudiated the omnipotence of the State, its intervention and regimentation, and proclaimed the sovereignty of the moral law of the individual — remarking already that, while the necessary instinct of self-preservation leads man to egotism, nature has supplied a corrective to it by providing man with another instinct — that of sociability. When men are reasonable enough to follow their natural instincts, they will unite across the frontiers and constitute the Cosmos. They will have no need of law-courts or police, will have no temples and no public worship, and use no money — free gifts taking the place of the exchanges. Unfortunately, the writings of Zeno have not reached us and are only known through fragmentary quotations. However, the fact that his very wording is similar to the wording now in use, shows how deeply is laid the tendency of human nature of which he was the mouthpiece.