cobbler, keep to your last

== English == === Etymology === From last (“a tool for shaping shoes”), related to the Latin phrase sutor, ne ultra crepidam. === Proverb === cobbler, keep to your last (idiomatic) One should not criticise matters outside one's field of expertise; one should mind one's business. Synonym: shoemaker, stick to your last ==== Translations ==== === See also === === Further reading === sutor, ne ultra crepidam on Wikipedia.Wikipedia