It’s in Pedro Vallés Libro de refranes (1549) along with Cada gorrión tiene su espigón, which I’d translate as “To each sparrow his ear of corn.” Contrary to general belief, concrete of various types was known after the Romans lost it and the British rediscovered it, so is this saying something like “Reinforce your concrete…
Moving house, so orders may take longer until mid-February - mail me first if in doubt. Shop deliveries free on foot in Leeds LS1-8 & LS13. Dismiss