His admirable style, clear, elegant and simple, together with his philosophical and positive spirit, gave his works the character of brilliants. In his preparatory work he was very meticulous and hardworking, visiting libraries and taking notes on everything that might interest him. The preserves numerous strips of paper written in his own hand, the living testimony of his industriousness. He also became very loved by his students, who esteemed him very much for considering him mild in his dealings and for his kind character. Molina taught them Latin, rhetoric, geography, and history. In respond, his students gave him snuff and coffee, one of the simple passions of the now elderly priest, who lived in a modest house on the outskirts of Bologna.