You are the salt of the earth... You are the light of the world" (Mt 5:13-14): The images of salt and light used by Jesus are rich in meaning and complement each other. In ancient times, salt and light were seen as essential elements of life.
"You are the salt of the earth...". One of the main functions of salt is to season food, to give it taste and flavour. This image reminds us that, through Baptism, our whole being has been profoundly changed, because it has been "seasoned" with the new life which comes from Christ (cf. Rom 6:4). The salt which keeps our Christian identity intact even in a very secularized world is the grace of Baptism. Through Baptism we are re-born. We begin to live in Christ and become capable of responding to his call to "offer [our] bodies as a living sacrifice, holy and acceptable to God" (Rom 12:1). Writing to the Christians of Rome, Saint Paul urges them to show clearly that their way of living and thinking was different from that of their contemporaries: "Do not be conformed to this world, but be transformed by the renewal of your mind, that you may discern what is the will of God, what is good and pleasing and perfect" (Rom 12:2).
For a long time, salt was also used to preserve food. As the salt of the earth, you are called to preserve the faith which you have received and to pass it on intact to others. Your generation is being challenged in a special way to keep safe the deposit of faith (cf. 2 Th 2:15; 1 Tim 6:20; 2 Tim 1:14).
Discover your Christian roots, learn about the Church’s history, deepen your knowledge of the spiritual heritage which has been passed on to you, follow in the footsteps of the witnesses and teachers who have gone before you! Only by staying faithful to God’s commandments, to the Covenant which Christ sealed with his blood poured out on the Cross, will you be the apostles and witnesses of the new millennium.
It is the nature of human beings, and especially youth, to seek the Absolute, the meaning and fullness of life. Dear young people, do not be content with anything less than the highest ideals! Do not let yourselves be dispirited by those who are disillusioned with life and have grown deaf to the deepest and most authentic desires of their heart. You are right to be disappointed with hollow entertainment and passing fads, and with aiming at too little in life. If you have an ardent desire for the Lord you will steer clear of the mediocrity and conformism so widespread in our society.


Which well known preacher said this? I'll give you one clue, he is dead, recently.