126 Although pained by the injustice and downcast in fatherly sorrow, it is so far from Our thought to repulse or to disown children who have been miserably deceived and have strayed so far from the truth and salvation that We cannot but invite them with all possible solicitude to return to the maternal bosom of the Church. May they lend ready ears to Our voice, may they return whence they have left, to the home that is truly their Father's, and may they stand firm there where their own place is, in the ranks of those who, zealously following the admonitions which Leo promulgated and We have solemnly repeated, are striving to restore society according to the mind of the Church on the firmly established basis of social justice and social charity. And let them be convinced that nowhere, even on earth, can they find full happiness save with Him who, being rich, became poor for our sakes that through His poverty we might become rich, Who was poor and in labors from His youth, Who invited to Himself all that labor and are heavily burdened that He might refresh them fully in the love of His heart, and Who, lastly, without any respect for persons will require more of them to whom more has been given and "will render to everyone according to his conduct."
Source: Quadragesimo Anno (Vatican.va)