In 1913-14 Gris arrived at a personal and mature version of Synthetic Cubism characterized by rigorously geometrical compositions in which fragmented objects and sharp-edged planes are articulated with maximum clarity. A more theoretical painter than Picasso or Georges Braque, Gris systematized their discoveries, making their intuitions comprehensible and, consequently, helping to spread the Cubist style. His version of Cubism was more severe and classical, less spontaneous and instinctive, than theirs. Between 1921 and 1927 Gris transformed his Synthetic Cubist idiom so that his style became increasingly free and lyrical.