Today's O antiphon is O Adonai (Lord):
O Adonai, and leader of the House of Israel,
who appeared to Moses in the fire of the burning bush
and gave him the law on Sinai:
Come and redeem us with an outstretched arm.
"Life on earth, however good and desirable in itself, is not the final purpose for which man is created; it is only the way and the means to that attainment of truth and that love of goodness in which the full life of the soul consists." Leo XIII, Rerum Novarum