 In 1943, he made three windows for the church of Nôtre Dame de Toute Grace at Assy on the subject of saints related to music, at the glazier's workshop of Marguerite Huré, who showed him the tricks of the trade.With those works, he was to figure in the company of Georges Rouault (stained glass), Henri Matisse (mural), Fernand Léger (mosaic), Pierre Bonnard (painting), Marc Chagall (ceramics), and others.A magnificent catalyst in the debate on modern art and religion at the time was Father Couturier, who had so great an impact on Matisse and his designs for the Vence Chapel, on Dominique de Menil and the Rothko Chapel.