“I am a rebel by birth. … I contest anything that is unjust, that causes suffering in humanity.”

Source: Democracy in America

Book of Taliesin (c. 1275?), The First Address of Taliesin
Context: I am a bard; I will not disclose secrets to slaves;
I am a guide: I am expert in contests.
If he would sow, he would plough; he would plough, he would not reap.
If a brother among brothers,
Didactic Bards with swelling breasts will arise
Who will meet around mead-vessels,
And sing wrong poetry
And seek rewards that will not be,
Without law, without regulation, without gifts.
And afterwards will become angry.

Remark to a reception at 10 Downing Street (24 June 1980), quoted in Norman St John-Stevas, The Two Cities (London: Faber and Faber, 1984), p. 83
First term as Prime Minister

Source: Drenai series, The King Beyond the Gate, Ch. 12
Context: I never worshipped anything but my sword and my wits; now I suffer for it. But I can take it, for am I not a man?... It is not hard to be a legend, Tenaka. It is what follows when you have to live like one.

A Short History of Decay (1949)

Source: Lullaby (2002), Chapter 26

Source: The Darkest Evening of the Year

Nobel acceptance speech (1989)
Context: I believe all suffering is caused by ignorance. People inflict pain on others in the selfish pursuit of their happiness or satisfaction. Yet true happiness comes from a sense of inner peace and contentment, which in turn must be achieved through the cultivation of altruism, of love and compassion and elimination of ignorance, selfishness and greed.
The problems we face today, violent conflicts, destruction of nature, poverty, hunger, and so on, are human-created problems which can be resolved through human effort, understanding and the development of a sense of brotherhood and sisterhood. We need to cultivate a universal responsibility for one another and the planet we share. Although I have found my own Buddhist religion helpful in generating love and compassion, even for those we consider our enemies, I am convinced that everyone can develop a good heart and a sense of universal responsibility with or without religion.

Quote in his letter to brother Theo, from Arles, France, 9 March. 1889; as quoted in Vincent van Gogh, edited by Alfred H. Barr; Museum of Modern Art, New York, 1935 https://www.moma.org/documents/moma_catalogue_1996_300061887.pdf, (letter 579), p 25
1880s, 1889