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His whole body was completely still, except the wings, which were still fluttering a little, like when someone dies. That's when he finally understood that of all the things the angel had told him, nothing was true. That he wasn't even an angel, just a liar with wings.

Etgar Keret (2015). “The Bus Driver Who Wanted to Be God & Other Stories”, p.15, Penguin
His whole body was completely still, except the wings, which were still fluttering a little, like when someone dies. That's when he finally understood that of all the things the angel had told him, nothing was true.