My experience of Mass is that it is human imperfection, leaning as well as it is able in the direction of divine perfection. The manifestation of our imperfections varies somewhat from service to service in my own church, and is also varied among the styles of worship elsewhere, from the Latin chant of my Dominican friends, to the impassioned homilies and alter-calls at home. But in all cases that essential leaning-towards is present, and is beautiful.