“Corpses shouldn’t be forced to answer questions. Death was man’s ancient privilege, his immemorial pact with life, granted to the slave as well as the noble. Death was man’s solace, and his right. But perhaps they had revoked that right; and now you couldn’t evade your responsibilities simply by being dead.”

Man's Search for Meaning (1946; 1959; 1984)

A Plea for Captain John Brown (1859)
Context: It was his peculiar doctrine that a man has a perfect right to interfere by force with the slaveholder, in order to rescue the slave. I agree with him. They who are continually shocked by slavery have some right to be shocked by the violent death of the slaveholder, but no others.

[Baqir Sharīf al-Qurashi, The life of Imam Muhammad al-Jawad, Wonderful Maxims and Arts, 2005]

Source: What is Property? (1840), Ch. I: "Method Pursued in this Work. The Idea of a Revolution"
Context: If I were asked to answer the following question: What is slavery? and I should answer in one word, It is murder, my meaning would be understood at once. No extended argument would be required to show that the power to take from a man his thought, his will, his personality, is a power of life and death; and that to enslave a man is to kill him. Why, then, to this other question: What is property! may I not likewise answer, It is robbery, without the certainty of being misunderstood; the second proposition being no other than a transformation of the first?
I undertake to discuss the vital principle of our government and our institutions, property: I am in my right. I may be mistaken in the conclusion which shall result from my investigations: I am in my right. I think best to place the last thought of my book first: still am I in my right.

Source: Choke

To a British military officer (August 1780), as quoted in Washington and the Generals of the American Revolution (1856), by Rufus Wilmot Griswold, William Gilmore Simms, and Edward Duncan Ingraham. J.B. Lippincott, p. 271. Also quoted in "Death of Baron De Kalb" https://books.google.com/books?id=k2QAAAAAYAAJ&pg=PA234&lpg=PA234&dq=%22I+thank+you+sir+for+your+generous+sympathy,+but+I+die+the+death+I+always+prayed+for:+the+death+of+a+soldier+fighting+for+the+rights+of+man%22&source=bl&ots=-93hJzoCYU&sig=tAag8ObQI-ZjiII56viczov02wM&hl=en&sa=X&ei=VlYVVcuJI4KmNsazgYgL&ved=0CCUQ6AEwAQ#v=onepage&q=%22I%20thank%20you%20sir%20for%20your%20generous%20sympathy%2C%20but%20I%20die%20the%20death%20I%20always%20prayed%20for%3A%20the%20death%20of%20a%20soldier%20fighting%20for%20the%20rights%20of%20man%22&f=false (1849), by Benjamin Franklin Ells, The Western Miscellany, Volume 1, p. 233. These were reportedly his last words.
1780s

1960s, The American Promise (1965)

Source: One is A Crowd: Reflections of An Individualist (1952), p. 47

Part IV, Prop. LXVII
Ethics (1677)