“To renounce liberty is to renounce being a man, to surrender the rights of humanity and even its duties.”

The Divinity College Address (1838) : full title “An Address Delivered Before the Senior Class in Divinity College, Cambridge, Sunday Evening, July 15, 1838”, given at Harvard Divinity School : as contained in The Spiritual Emerson: Essential Writings, Emerson, ed. David M Robinson, Beacon Press (2004), p. 78 : ISBN 0807077194

Introduction : The absurdity of the Absurd
The Theatre of the Absurd (1961)
Context: The Theatre of the Absurd has renounced arguing about the absurdity of the human condition; it merely presents it in being — that is, in terms of concrete stage images. This is the difference between the approach of the philosopher and that of the poet; the difference, to take an example from another sphere, between the idea of God in the works of Thomas Aquinas or Spinoza and the intuition of God in those of St. John of the Cross or Meister Eckhart — the difference between theory and experience.

Source: Autobiography of a Yogi, Chapter 44 - "With Mahatma Gandhi At Wardha"

1950s, The Russell-Einstein Manifesto (1955)
Context: Here, then, is the problem which we present to you, stark and dreadful and inescapable: Shall we put an end to the human race; or shall mankind renounce war? People will not face this alternative because it is so difficult to abolish war.
The abolition of war will demand distasteful limitations of national sovereignty. But what perhaps impedes understanding of the situation more than anything else is that the term "mankind" feels vague and abstract. People scarcely realize in imagination that the danger is to themselves and their children and their grandchildren, and not only to a dimly apprehended humanity. They can scarcely bring themselves to grasp that they, individually, and those whom they love are in imminent danger of perishing agonizingly. And so they hope that perhaps war may be allowed to continue provided modern weapons are prohibited.
This hope is illusory. Whatever agreements not to use H-bombs had been reached in time of peace, they would no longer be considered binding in time of war, and both sides would set to work to manufacture H-bombs as soon as war broke out, for, if one side manufactured the bombs and the other did not, the side that manufactured them would inevitably be victorious.

In Search of the Miraculous (1949)

(I.3) Del Rey, p. 74
Blade of Tyshalle (2001)

A Vindication of Natural Society (1756)
Context: We are indebted for all our miseries to our distrust of that guide, which Providence thought sufficient for our condition, our own natural reason, which rejecting both in human and Divine things, we have given our necks to the yoke of political and theological slavery. We have renounced the prerogative of man, and it is no wonder that we should be treated like beasts. But our misery is much greater than theirs, as the crime we commit in rejecting the lawful dominion of our reason is greater than any which they can commit. If, after all, you should confess all these things, yet plead the necessity of political institutions, weak and wicked as they are, I can argue with equal, perhaps superior, force, concerning the necessity of artificial religion; and every step you advance in your argument, you add a strength to mine. So that if we are resolved to submit our reason and our liberty to civil usurpation, we have nothing to do but to conform as quietly as we can to the vulgar notions which are connected with this, and take up the theology of the vulgar as well as their politics. But if we think this necessity rather imaginary than real, we should renounce their dreams of society, together with their visions of religion, and vindicate ourselves into perfect liberty.

Victory: An Island Tale (1915), part II, Ch. 3

The Crisis No. V
Source: 1770s, The American Crisis (1776–1783)