Recognised as one of the great renovators of Informalism, Antoni Tàpies began in Surrealism, evolving early on towards a spiritual abstraction marked by experimentation with different pictorial textures and the incorporation of symbols and signs on the canvas. Since then, his work has been constructed as a true material and symbolic investigation, guided by the conviction that nature, matter, science, spirituality and mysticism are a whole. Among his usual signs, the cross, the X and the letter T stand out. With the title Crosses, X's and other contradictions, in 1994, he himself explained the following: "The images of the cross and crosses, of opposing lines and planes, of the intersections of opposing forces, etc., in many cultures are considered a fundamental symbolic representation of the world". (Antoni Tàpies, Crosses, X's and other contradictions, 1994).