As with many of the artists of the “New Horizons” group, his early works were influenced by the post impressionism and the expressionism of the School of Paris (Ecole de Paris). Even though in his works the images went through a process of formal reduction, that is, abstraction, the formula that Joseph Zaritsky crystallized in “New Horizons” was very far from Aroch's interest in the significance of the images. Aroch invested his time in many interviews in order to emphasize his interest in formalism, in its forms and in its way of constructing a painting.