28 Neither must it be supposed that the solicitude of the Church is so preoccupied with the spiritual concerns of her children as to neglect their temporal and earthly interests. Her desire is that the poor, for example, should rise above poverty and wretchedness, and better their condition in life; and for this she makes a strong endeavor. By the fact that she calls men to virtue and forms them to its practice she promotes this in no slight degree. Christian morality, when adequately and completely practiced, leads of itself to temporal prosperity, for it merits the blessing of that God who is the source of all blessings; it powerfully restrains the greed of possession and the thirst for pleasure-twin plagues, which too often make a man who is void of self-restraint miserable in the midst of abundance;(23) it makes men supply for the lack of means through economy, teaching them to be content with frugal living, and further, keeping them out of the reach of those vices which devour not small incomes merely, but large fortunes, and dissipate many a goodly inheritance.
Source: Rerum Novarum (Vatican.va)