39 Finally, it may not be asserted, as some do, that the "mutual help," which is sought in Christian Marriage, is a more effective aid in striving for personal sanctity than the solitude of the heart, as they term it, of virgins and celibates. For although all those who have embraced a life of perfect chastity have deprived themselves of the expression of human love permitted in the married state, nonetheless it cannot thereby be affirmed that because of this privation they have diminished and despoiled the human personality. For they receive from the Giver of heavenly gifts something spiritual which far exceeds that "mutual help" which husband and wife confer on each other. They consecrate themselves to Him Who is their source, and Who shares with them His divine life, and thus personality suffers no loss, but gains immensely. For who, more than the virgin, can apply to himself that marvelous phrase of the Apostle Paul: "I live, now not I; but Christ liveth in me."
Source: Sacra Virginitas (Vatican.va)