Lord Jesus ascended into heaven.
We might well wish that He had not. We might prefer that He had remained on earth, with us, so that we could see Him. We might think that God being visible on earth would make the Christian faith considerably easier to sustain.
But St. Thomas Aquinas explains in the Summa Theologica why we should, in fact, rejoice that Christ ascended into heaven–even though, for now, it is beyond our sight. St. Thomas gives a number of reasons. One of them is this: We rejoice in Christ’s Ascension because it directs our fervor toward the invisible Holy Spirit. The Holy Spirit, which Christ gives us from heaven, is, to quote St. Thomas, “love drawing us up to heavenly things.” The Holy Spirit is nothing other than “love drawing us up to heavenly things.”
In other words: God is; our religion revolves around; the meaning of life is: love drawing us up to heavenly things. I would say that this may be the key concept for our spiritual lives in AD 2014, fifty years after Vatican II.