The admission speech by the renowned auditor Frederic Borràs at the Royal European Academy of Doctors-Barcelona 1914 (RAED), “El reto de mejorar la calidad de la auditoría” (The challenge of improving the quality of auditing), is the starting point of the remarkable work of master final “¿Cómo se mide la calidad en auditoría? Indicadores, parámetros y estudio aplicado a las firmas auditoras externas” (How to measure the quality of auditing? Indicators, parameters and study applied to external audit firms), presented by Juan José Cabrera Hernández at the Pontifical University Comillas ICAI ICADE in Madrid. The speech, presented on July 19, 2016, was already considered a reference text by the Spanish Association of Accounting and Business Administration.