24 From contemplation of this divine Model, it is more easy to understand that the true worth and nobility of man lie in his moral qualities, that is, in virtue; that virtue is, moreover, the common inheritance of men, equally within the reach of high and low, rich and poor; and that virtue, and virtue alone, wherever found, will be followed by the rewards of everlasting happiness. Nay, God Himself seems to incline rather to those who suffer misfortune; for Jesus Christ calls the poor "blessed";(20) He lovingly invites those in labor and grief to come to Him for solace;(21) and He displays the tenderest charity toward the lowly and the oppressed. These reflections cannot fail to keep down the pride of the well-to-do, and to give heart to the unfortunate; to move the former to be generous and the latter to be moderate in their desires. Thus, the separation which pride would set up tends to disappear, nor will it be difficult to make rich and poor join hands in friendly concord.
Source: Rerum Novarum (Vatican.va)