Human life cannot be realized by itself. Our life is an open question, an incomplete project, still to be brought to fruition and realized. Each man's fundamental question is: How will this be realized—becoming man? How does one learn the art of living? Which is the path toward happiness?
To evangelize means: to show this path—to teach the art of living. At the beginning of his public life Jesus says: I have come to evangelize the poor (Luke 4:18); this means: I have the response to your fundamental question; I will show you the path of life, the path toward happiness—rather: I am that path. (Joseph Cardinal Ratzinger - Address to Catechists and Religion Teachers)