We cannot interfere in one area of the ecosystem without paying due attention to both the consequences of such interference in other areas and to the well-being of future generations.

New knowledge has led to the recognition in the theory of evolution of more than a hypothesis. It is indeed remarkable that this theory has been progressively accepted by researchers, following a series of discoveries in various fields of knowledge. The convergence, neither sought nor fabricated, of the results of work that was conducted independently is in itself a significant argument in favor of this theory.

Prayer can truly change your life. For it turns your attention away from yourself and directs your mind and your heart toward the Lord. If we look only at ourselves, with our own limitations and sins, we quickly give way to sadness and discouragement. But if we keep our eyes fixed on the Lord, then our hearts are filled with hope, our minds are washed n the light of truth, and we come to know the fullness of the Gospel with all is promise and life.

In the designs of Providence, there are no mere coincidences.

If development is the new name for peace, war and preparations for war are the major enemy of the healthy development of peoples. If we take the common good of all humanity as our norm, instead of individual greed, peace would be possible.

A man, even if seriously sick or prevented in the exercise of its higher functions, is and will be always a man ... [he] will never become a 'vegetable' or an 'animal,'" the Pope said. "The intrinsic value and personal dignity of every human being does not change depending on their circumstances.

In our time, in particular, there exists another form of ownership which is becoming no less important than land: the possession of know-how, technology and skill. The wealth of the industrialized nations is based much more on this kind of ownership than on natural resources.