Source: The Wheel of Time: Shamans of Ancient Mexico, Their Thoughts About Life, Death and the Universe], (1998), Quotations from A Separate Reality (Chapter 6)
“When a man has no enemy left there must be something mean about him.”
Vera; or, The Nihilists (1880)
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Oscar Wilde 812
Irish writer and poet 1854–1900Related quotes
Source: The View of Life (1918), p. 5-6 part of the first essay "Life as Transcendence"
Context: Man is something that is to be overcome.
Logically considered, this, too, presents a contradiction: he who overcomes himself is admittedly the victor, but he is also the defeated. The ego succumbs to itself, when it wins; it achieves victory, when it suffers defeat. Yet the contradiction only arises when the two aspects of this unity are hardened into opposed, mutually exclusive conceptions. It is precisely the fully unified process of the moral life which overcomes and surpasses every lower state by achieving a higher one, and again transcends this latter state through one still higher. That man overcomes himself means that he reaches out beyond the bounds that the moment sets for him. There must be something at hand to be overcome, but it is only there in order to be overcome. Thus even as an ethical agent, man is the limited being that has no limit.

“A wrongdoer is often a man who has left something undone, not always one who has done something.”
Ἀδικεῖ πολλάκις ὁ μὴ ποιῶν τι, οὐ μόνον ὁ ποιῶν τι.
IX, 5
Source: Meditations (c. 121–180 AD), Book IX

“An excellent man: he has no enemies, and none of his friends like him.”
Quoted by George Bernard Shaw in a letter to Ellen Terry, 25 September 1896.
Context: On George Bernard Shaw An excellent man: he has no enemies, and none of his friends like him.

“When you have an enemy in your power, deprive him of the means of ever injuring you.”
Source: Political Aphorisms, Moral and Philosophical Thoughts (1848), p. 30

Jasper Ridley, Tito: A Biography (Constable and Company Ltd., 1994), p. 323.
Other

Go Rin No Sho (1645), The Fire Book
“It is good that a man's enemies want him dead, for it proves he has lived a life of worth.”
Source: The Outlaw Josey Wales

"A Skinny Dakota Kid Who Made Good"
The Illiterate Digest (1924)