“All things obey fixed laws.”

And this is the Origin of every Kind of Subjection; which feels itself more or less alleviated, in Proportion to the Situation of the Subjects.And, consequently, as the Law of Nature commands Us to take as much Care, as lies in Our Power, of the Prosperity of all the People; we are obliged to alleviate the Situation of the Subjects, as much as sound Reason will permit. And therefore, to shun all Occasions of reducing People to a State of Slavery, except the utmost Necessity should inevitably oblige us to do it; in that Case, it ought not to be done for our own Benefit; but for the Interest of the State: Yet even that Case is extremely uncommon. Of whatever Kind Subjection may be, the civil Laws ought to guard, on the one Hand, against the Abuse of Slavery, and, on the other, against the Dangers which may arise from it.
Proposals for a New Law Code (1768)

Address to the Tenth National Women's Rights Convention on Marriage and Divorce, New York City, May 11, 1860; as published in Elizabeth Cady Stanton, Feminist as Thinker: A Reader in Documents and Essays edited by Ellen Carol DuBois and Richard Cándida Smith.

Source: Hothouse (1962), Chapter 1 (first line)

Source: Letter to Henry VIII (30 June 1540), quoted in Roger Bigelow Merriman, Life and Letters of Thomas Cromwell, Volume II: Letters from 1536, Notes, Index (1902), p. 273

Letter to Sir Hercules Langrishe (1792)
1790s

Ch. 3, Sect. 11 http://www.constitution.org/as/dcg_311.htm
Discourses Concerning Government (1689)

The Law of the Jungle, Stanza 19.
The Second Jungle Book (1895)

Source: god is Not Great: How Religion Poisons Everything

Source: Pussy, King of the Pirates