Document important were his memoirs, published posthumously: Mitja vida de teatre (Half Life Theatre, 1960).
For this purpose he built a Catalan repertoire full of classics, contemporary and native size plays like Aeschylus, Molière, Shakespeare, Goethe, Pérez Galdós, Maragall, Àngel Guimerà o Santiago Rusiñol.
At the same time, the creation of l'Escola Catalana d'Art Dramàtic (School of Dramatic Art, 1913–1934), the current seed of l'Institut del Teatre (Theatre Institute), helped institutionalize the Catalan theater.
Aiming to renew the drama from head to toe Catalan sign nineteenth century, alternated eclectic references, from Henrik Ibsen and Maurice Maeterlinck to Richard Wagner, to Gabriele d'Annunzio and Gerhart Hauptmann and aesthetic heterogeneous.
First, Gual opted for a dramatic style of drawing more realistic, melodramatic and social, which is quite visible in Els pobres menestrals (1908).