The Church must never be satisfied with the ranks of those whom she has reached at a certain point or say that others are fine as they are: Muslims, Hindus and so forth. The Church can never retreat comfortably to within the limits of her own environment. She is charged with universal solicitude; she must be concerned with and for one and all... We must... as the Lord says - go out ever anew 'to the highways and hedges' (Luke 14:23), to deliver God's invitation to his banquet also to those who have so far heard nothing or have not been stirred within.

The ecological crisis shows the urgency of a solidarity which embraces time and space... A greater sense of intergenerational solidarity is urgently needed. Future generations cannot be saddled with the cost of our use of common environmental resources.

Many of our brothers and sisters are 'baptized, but insufficiently evangelized.' In a number of cases, nations once rich in faith and in vocations are losing their identity under the influence of a secularized culture. The need for a new evangelization, so deeply felt by my venerable Predecessor, must be valiantly reaffirmed, in the certainty that God's word is effective.

To make a concrete response to the appeal of our brothers and sisters in humanity, we must come to grips with the first of these challenges: solidarity among generations, solidarity between countries and entire continents, so that all human beings may share more equitably in the riches of our planet. This is one of the essential services that people of good will must render to humanity. The earth, in fact, can produce enough to nourish all its inhabitants, on the condition that the rich countries do not keep for themselves what belongs to all.

Christianity is not a new philosophy or new morality. We are Christians only if we encounter Christ... Only in this personal relationship with Christ, only in this encounter with the Risen One do we really become Christians... Therefore, let us pray to the Lord to enlighten us, so that, in our world, he will grant us the encounter with his presence, and thus give us a lively faith, an open heart, and great charity for all, capable of renewing the world.

If we allow the love of Christ to change our heart, then we can change the world. This is the secret of authentic happiness.

Today, the need to avoid confusing marriage with other types of unions based on weak love is especially urgent. It is only the rock of total, irrevocable love between a man and a woman that can serve as the foundation on which to build a society that will become a home for all mankind.