Thanks to an early vocation for painting, Sempere began in 1941 his training period at the School of Fine Arts of San Carlos in Valencia, the city where his family moved after the civil war, after having lost his toy factory in Onil.
Sempere had finished his high school studies a few months earlier and attended evening classes at the School of Arts and Crafts, which had given him some knowledge and practice in drawing. His six years of academic training were tedious and frustrating. Artistic education in Spain during those postwar years was depressing; to the poor teachers, mediocre as artists, authoritarian and despotic in their classes, was added an extreme conservatism in the content and continuous "Sorolla-like" references as the only valid example to follow, just as the artist recalls time and again.
At the School he met Father Alfons Roig, professor of the subject Liturgy and Christian Culture, who spoke to the San Carlos students about Kandinsky and was perhaps the only person knowledgeable about and an enthusiastic defender of modernity and avant-garde movements. Eusebio finished his studies in 1946 but remained at San Carlos until 1948 in order to study the specialty of intaglio engraving with professor Ernesto Furió, one of the few teachers who managed to earn the respect of his students. Sempere learned the technique of etching and dry point, and his engravings show an exceptional mastery of graphic art, working texture and volume and skillfully balancing light and darkness.
Sempere studied modeling, drawing, anatomy, perspective and painting procedures, acquiring solid training in the artistic craft that is demonstrated in the preserved works from those training years. At the end of 1948, the SEU (University Students' Union) grants him a scholarship to pursue further studies in Paris. There he will become an artist-
