this is good stuff
We know that everyday physical energy can be dynamic, i.e., performing work, or that it can be merely potential, as, for example, water collected in a man-made lake. Like an unused lake filled by the streams flowing into it, a person with the sacraments and services of the Church can receive the abundant Grace of God, without, however, doing any good works. When, however, one opens the sluices of an inactive lake, powerful streams of water break out, turbines spin and generators produce electric energy. Just so, each of us may overcome our inertia and begin to live a full-fledged spiritual life. Then, by the words of the Saviour, "out of his heart shall flow rivers of living water" (John 7:38).