Catholic Herald: Full text of Pope Benedict XVI's welcome address in Madrid

Do not be ashamed of the Lord.

Excerpts:

I have come here to meet thousands of young people from all over the world, Catholics committed to Christ searching for the truth that will give real meaning to their existence. I come as the Successor of Peter, to confirm them all in the faith, with days of intense pastoral activity, proclaiming that Jesus Christ is the way, the truth and the life; to motivate the commitment to build up the Kingdom of God in the world among us; to exhort young people to and so, rooted in his person, to become faithful followers and valiant witnesses.
Why has this multitude of young people come to Madrid? While they themselves should give the reply, it may be supposed that they wish to hear the word of God, as the motto for this World Youth Day proposed to them, in such a way that, rooted and built upon Christ, they may manifest the strength of their faith.

Many of them have heard the voice of God, perhaps only as a little whisper, which has led them to search for him more diligently and to share with others the experience of the force which he has in their lives. The discovery of the living God inspires young people and opens their eyes to the challenges of the world in which they live, with its possibilities and limitations. They see the prevailing superficiality, consumerism and hedonism, the widespread banalization of sexuality, the lack of solidarity, the corruption. They know that, without God, it would be hard to confront these challenges and to be truly happy, and thus pouring out their enthusiasm in the attainment of an authentic life. But, with God beside them, they will possess light to walk by and reasons to hope, unrestrained before their highest ideals, which will motivate their generous commitment to build a society where human dignity and true brotherhood are respected.

[. . .]

But, with all my heart, I say again to you young people: let nothing and no one take away your peace; do not be ashamed of the Lord. He did not spare himself in becoming one like us and in experiencing our anguish so as to lift it up to God, and in this way he saved us.

Full text at the link.