From The Black Riders and Other Lines [1895] ...

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3.

In the desert
I saw a creature, naked, bestial,
Who, squatting upon the ground,
Held his heart in his hands,
And ate of it.
I said, "Is it good, friend?"
"It is bitter – bitter", he answered,
"But I like it
Because it is bitter,
And because it is my heart."

Stephen Crane