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A traveller at Sparta, standing long upon one leg, said to a Lacedaemonian, "I do not believe you can do as much." "True," said he, "but every goose can."

Plutarch (1871). “Plutarch's Morals”, p.433
A traveller at Sparta, standing long upon one leg, said to a Lacedaemonian, I do not believe you can do as much. True, said he, but every goose can.