 Other tellers of the story stress the crow's persistence.In Francis Barlow's edition the proverb 'Necessity is the mother of invention' is applied to the story while an early 20th-century retelling quotes the proverb 'Where there's a will, there's a way'.Artistic use of the fable may go back to Roman times, since one of the mosaics that has survived is thought to have the story of the crow and the pitcher as its subject.