By doggedly ploughing his own furrow, Hartung in a sense refused to choose between two simplistic visions of abstract art: on one side, eruptive and chaotic painting, based on pure intuition, combined with the expressionist, gestural, lyrical, informal and
Tachiste tendencies of post-war painting; and, on the other, control, precision and systems, whose notions belong more to the realm of Geometric Abstraction.