But where his works leave pastiche and look for the sources of personal inspiration -- in his monochrome meditation on Velázquez 's great masterpiece Las Meninas or his lushly tender takes on Ingres 's polished odalisques or in the sombre austerity of his still-life compositions -- Picasso 's " versions " come across not only with the directness and individuality of an iconoclastic Modern force but can also , at the same time , return us afresh to tradition .