‘May I be — please don’t forget! — the third person in your union.’ On 1 July 1962, as the German Chancellor Konrad Adenauer visits France, German cartoonist Herbert Kolfhaus — taking inspiration from a famous couplet in the poem Die Bürgschaft (‘The Hostage’), by Friedrich von Schiller — emphasises that European unity should not be sacrificed for the sake of good Franco-German relations.