Dolphins can live in the deepest water without danger because they regularly come to the surface and breathe in air that sustains them. We, too, must rise in prayer into the spiritual realm. To pray is to breathe in God's life-giving spirit that gives life and peace, even in this world.
There is an old story about a famous rabbi living in Europe who was visited one day by a man who had traveled by ship from New York to see him. The man came to the great rabbi's dwelling, a large house, and was directed to the rabbi's room, which was in the attic. He entered to find the master living in a room with a bed, a chair, and a few books. The man had expected more. After greetings, he asked, "Rabbi, where are your things?”
The rabbi asked in return, "Well, where are yours?"
The visitor replied, "But, Rabbi, I"m only passing through."
And the master answered, "So am I, so am I."