As Joseph Ramon Jones and John Esten Keller note in their introduction to their most accessible English version of Pedro Alfonso's The Scholar's Guide,

Though this assertion is not completely true, it can be said that Pedro Alfonso, in this little anthology of stories, was the first to give sudden vogue to age-old tales from the East and to make these quickly available in Latin, a language all western scholars could read.

That the Disciplina had wide and continuous readership on the Continent from its composition in the twelfth century throughout the subsequent Middle Ages and the Early Modern period is evident not only from the sheer number of extant manuscripts – Alfons Hilka and Werner Söderhjelm, editors of the definitive Latin edition, describe sixty-three manuscripts copied in Spain, Italy, France, Germany, the Low Countries, Austria, and England between 1200 and 1450, to which list John Tolan has added thirteen others unknown to them – but also from the significance to letters of those whose reliance on Pedro Alfonso's “little anthology of stories” can be shown to include (to quote Jones and Keller) “as pertinent examples, the Fabulae of Odo of Cheriton, Jacques de Vitry's Exempla, the Scala Coeli of Johannes Gobius and Archdeacon Clemente Sánchez de Vercial's Libro de los exenplos por a.b.c.”