Who said "Guilt and love are sometimes impossible to separate."?

This quote is attributed to Death.

Guilt and love are sometimes impossible to separate. - Death

"Guilt and love are sometimes impossible to separate."

Death Relationships

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."

"The key to a happy marriage is communication."

"Marriage is about compromise and understanding."

"Life's greatest treasures are relationships."

"Trust is a luxury I can't afford."