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."
PlutarchIt is no disgrace not to be able to do everything; but to undertake, or pretend to do, what you are not made for, is not only shameful, but extremely troublesome and vexatious.
Plutarch