Changing established life-styles

This is the culture which is hoped for, one which fosters trust in the human potential of the poor, and consequently in their ability to improve their condition through work or to make a positive
contribution to economic prosperity. But to accomplish this, the poor—be they individuals or nations—need to be provided with realistic opportunities. Creating such conditions calls for a concerted worldwide effort to promote development, an effort which involves sacrificing the positions of income and of power enjoyed by the more developed economies.

This may mean making important changes in established life-styles, in order to limit the waste of environmental and human resources, thus enabling every individual and all peoples of the earth to have a sufficient share of those resources.

(Centesimus Annus 52, emphasis in original)

Old commentary on this great passage from John Paul II-but still fresh today-can be found here - thanks for making it available.