Key Idea: Meddling
Observations: It seems that, this proverb comes from an anecdote in which a cobbler and a painter took part. As a result of a cobbler’s comment, the painter changed in one of his paintings the form of a sandal. But then, the painter was forced to silence the following cobbler’s comments regarding the painting, as they were referred to issues that did not concerned his working environment, and to recommend that he cares about his works, shoes. Each person has to care about its issues and profession and give an opinion only about what it knows, avoiding middling in what is unknown.