A selection of the Pope's words from World Youth Day 2011 in Madrid. 

[for the full texts of everything have a look at the WYD page on the Vatican site]

"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."

(Welcome Ceremony at Madrid Airport)

"Make trust in Christ's word the foundation of your lives! Planted and built up in him, firm in the faith and open to the power of the Spirit, you will find your place in God's plan and enrich the Church with your gifts. Let us pray for one another, so that we may be joyful witnesses to Christ, today and always. God bless you all!"

(Welcome at Plaza de Cibeles)

"There are words which serve only to amuse, as fleeting as an empty breeze; others, to an extent, inform us; those of Jesus, on the other hand, must reach our hearts, take root and bloom there all our lives. If not, they remain empty and become ephemeral. They do not bring us to him and, as a result, Christ stays remote, just one voice among the many others around us which are so familiar. Furthermore, the Master who speaks teaches, not something learned from others, but that which he himself is, the only one who truly knows the path of man towards God, because he is the one who opened it up for us, he made it so that we might have authentic lives, lives which are always worth living, in every circumstance, and which not even death can destroy."

(Welcome at Plaza de Cibeles)

"Dear young friends, may Christ's love for us increase your joy and encourage you to go in search of those less fortunate. You are open to the idea of sharing your lives with others, so be sure not to pass by on the other side in the face of human suffering, for it is here that God expects you to give of your very best: your capacity for love and compassion."

(Way of the Cross)

"How can a young person be true to the faith and yet continue to aspire to high ideals in today's society? In the Gospel we have just heard, Jesus gives us an answer to this urgent question: "As the Father has loved me, so I have loved you; abide in my love" (Jn 15:9)."

(Prayer Vigil at Cuatro Vientos)

"Yes, dear friends, God loves us. This is the great truth of our life; it is what makes everything else meaningful. We are not the product of blind chance or absurdity; instead our life originates as part of a loving plan of God. To abide in his love, then, means living a life rooted in faith, since faith is more than the mere acceptance of certain abstract truths: it is an intimate relationship with Christ, who enables us to open our hearts to this mystery of love and to live as men and women conscious of being loved by God.

If you abide in the love of Christ, rooted in the faith, you will encounter, even amid setbacks and suffering, the source of true happiness and joy. Faith does not run counter to your highest ideals; on the contrary, it elevates and perfects those ideals. Dear young people, do not be satisfied with anything less than Truth and Love, do not be content with anything less than Christ."

(Prayer Vigil at Cuatro Vientos)

"Dear friends, may no adversity paralyze you. Be afraid neither of the world, nor of the future, nor of your weakness. The Lord has allowed you to live in this moment of history so that, by your faith, his name will continue to resound throughout the world."

(Prayer Vigil at Cuatro Vientos)

"Friendship with Jesus will also lead you to bear witness to the faith wherever you are, even when it meets with rejection or indifference. We cannot encounter Christ and not want to make him known to others. So do not keep Christ to yourselves! Share with others the joy of your faith. The world needs the witness of your faith, it surely needs God."

(World Youth Day Mass at Cuatro Vientos)

There are more, of course, but this is a nice selection...