“All over the non-human world, with few exceptions, each being seeks the satisfaction of his own desires, if not with positive disregard for the happiness and misery of the rest of the universe, at least with sincere unconcern. There is no courtesy, sympathy, or amenity there—a cold, heartless, implacable world of strangers.”

1950s, What Desires Are Politically Important? (1950)
Context: Killing an enemy in a modern war is a very expensive operation... It is obvious that modern war is not good business from a financial point of view. Although we won both the world wars, we should now be much richer if they had not occured. If men were actuated by self-interest, which they are not – except in the case of a few saints – the whole human race would cooperate. There would be no more wars, no more armies, no more navies, no more atom bombs. There would not be armies of propagandists employed in poisoning the minds of Nation A against Nation B, and reciprocally of Nation B against Nation A. There would not be armies of officials at frontiers to prevent the entry of foreign books and foreign ideas, however excellent in themselves. There would not be customs barriers to ensure the existence of many small enterprises where one big enterprise would be more economic. All this would happen very quickly if men desired their own happiness as ardently as they desired the misery of their neighbors. But, you will tell me, what is the use of these utopian dreams? Moralists will see to it that we do not become wholly selfish, and until we do the millennium will be impossible.

Vol. 1, Chap. 49.
The Decline And Fall Of The Roman Empire: Volume 1 (1776)

"The Ethics of Human Beings Toward Non-human Beings", p. 276
The Universal Kinship (1906), The Ethical Kinship

"Debate with Jefferson Davis"

Source: The Heart of the Matter

Source: Better-World Philosophy: A Sociological Synthesis (1899), The Social Ideal, pp. 146–147

The monster to Robert Walton
Frankenstein (1818)
Context: I seek not a fellow feeling in my misery. No sympathy may I ever find. When I first sought it, it was the love of virtue, the feelings of happiness and affection with which my whole being overflowed, that I wished to be participated. But now that virtue has become to me a shadow, and that happiness and affection are turned into bitter and loathing despair, in what should I seek for sympathy? I am content to suffer alone while my sufferings shall endure; when I die, I am well satisfied that abhorrence and opprobrium should load my memory. Once my fancy was soothed with dreams of virtue, of fame, and of enjoyment. Once I falsely hoped to meet with beings who, pardoning my outward form, would love me for the excellent qualities which I was capable of unfolding. I was nourished with high thoughts of honour and devotion. But now crime has degraded me beneath the meanest animal. No guilt, no mischief, no malignity, no misery, can be found comparable to mine. When I run over the frightful catalogue of my sins, I cannot believe that I am the same creature whose thoughts were once filled with sublime and transcendent visions of the beauty and the majesty of goodness. But it is even so; the fallen angel becomes a malignant devil. Yet even that enemy of God and man had friends and associates in his desolation; I am alone.

Nobel Address (1991)
Context: All members of the world community should resolutely discard old stereotypes and motivations nurtured by the Cold War, and give up the habit of seeking each other's weak spots and exploiting them in their own interests. We have to respect the peculiarities and differences which will always exist, even when human rights and freedoms are observed throughout the world. I keep repeating that with the end of confrontation differences can be made a source of healthy competition, an important factor for progress. This is an incentive to study each other, to engage in exchanges, a prerequisite for the growth of mutual trust.
For knowledge and trust are the foundations of a new world order.

As quoted in Think, Vol. 27 (1961), p. 32
Disputed