Ad Catholici Sacerdotii §80

⁸⁰ But the first and most natural place where the flowers of the sanctuary should almost spontaneously grow and bloom, remains always the truly and deeply Christian family. Most of the saintly bishops and priests whose "praise the Church declares," owe the beginning of their vocation and their holiness to example and teaching of a father strong in faith and manly virtues, of a pure and devoted mother, and of a family in which the love of God and neighbor, joined with simplicity of life, has reigned supreme. To this ordinary rule of divine Providence exceptions are rare and only serve to prove the rule.