Who said "Even death has a heart."?

This quote is attributed to Death.

Even death has a heart. - Death

"Even death has a heart."

Death

Character in The Book Thief

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"I have hated words and I have loved them, and I hope I have made them right."

"The consequence of this is that I'm always finding human bones at number 33."

"I am haunted by humans."

"She was a girl who decided to steal books."