“Those animals which are incapable of making binding agreements with one another not to inflict nor suffer harm are without either justice or injustice; and likewise for those peoples who either could not or would not form binding agreements not to inflict nor suffer harm.”
32
Sovereign Maxims
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Epicurus 30
ancient Greek philosopher -341–-269 BCRelated quotes

Videla in 2012, as quoted in Adam Bernstein (May 17 2013). "Jorge Rafael Videla, ruthless Argentine junta leader, dies at 87". The Washington Post.

Source: Julian and Maddalo http://www.bartleby.com/139/shel115.html (1819), l. 482

1960s-1980s, "The Problem of Social Cost" (1960)

Socialism (1922), Epilogue (1947)
Context: State and government are the social apparatus of violent coercion and repression. Such an apparatus, the police power, is indispensable in order to prevent anti-social individuals and bands from destroying social co-operation. Violent prevention and suppression of anti-social activities benefit the whole of society and each of its members. But violence and oppression are none the less evils and corrupt those in charge of their application. It is necessary to restrict the power of those in office lest they become absolute despots. Society cannot exist without an apparatus of violent coercion. But neither can it exist if the office holders are irresponsible tyrants free to inflict harm upon those they dislike.

We must rethink globalization, or Trumpism will prevail (16 November 2016)

"Discovering Darwin", Proceedings of the International Anti-Vivisection and Animal Protection congress, held at Washington, D.C. December 8th to 11th, 1913 (1913), p. 158The only consistent attitude, since Darwin established the unity of life (and the attitude we shall assume, if we ever become really civilised), is the attitude of universal gentleness and humanity.

Introduction, p. 4
A Plea for the Animals (2014)

Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 55.

Misattributed
Source: Robert McAfee Brown https://en.wikipedia.org/wiki/Robert_McAfee_Brown. Preface for the 25th anniversary edition of Night https://en.wikipedia.org/wiki/Night_%28book%29. Page v, Bantam Books paperback; 1982 reissue edition.