““Could Yarl the Omnipotent create a stone so heavy he couldn’t lift it?” Green Green asked him.
”No,” said Courtcour.
”Why not?”
”He would not.”
”That is no answer.”
”Yes, it is. Think about it. Would you?””
Source: Isle of the Dead (1969), Chapter 7 (p. 157)
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Roger Zelazny 112
American speculative fiction writer 1937–1995Related quotes
Source: An Introduction to English Poetry (2002), Ch. 4: The Sense of Form (pp. 24-25)

“They are too green", he said, "and only good for fools.”
The Fox and the Grapes, fable 11; reported in Bartlett's Familiar Quotations, 10th ed. (1919).
Fables (1668–1679)
But kindness, never. Our ancestors didn't use the word, and they did not greatly value the quality — except perhaps insofar as they valued compassion.
Source: Civilisation (1969), Ch. 13: Heroic Materialism