Aesop for Children (1919)
24. THE LION AND THE ASS
One day as the Lion walked proudly down a forest aisle, and the animals respectfully made way for him, an Ass brayed a scornful remark as he passed.
The Lion felt a flash of anger. But when he turned his head and saw who had spoken, he walked quietly on. He would not honor the fool with even so much as a stroke of his claws.
Do not resent the remarks of a fool. Ignore them.
Aesop for Children (translator not identified), 1919. Illustrations by Milo Winter (1886-1956). Available online at Project Gutenberg.