The word of God makes us change our concept of realism: the realist is the one who recognizes in the word of God the foundation of all things.[31] This realism is particularly needed in our own time, when many things in which we trust for building our lives, things in which we are tempted to put our hopes, prove ephemeral. Possessions, pleasure and power show themselves sooner or later to be incapable of fulfilling the deepest yearnings of the human heart. In building our lives we need solid foundations