95 And let them also remember that Our predecessor of happy memory, Pius XII, expressed disapproval "in the strongest terms" of the opinion of those who have little use for frequent confession, where it is a matter of venial sins; the Supreme Pontiff said: "We particularly recommend the pious practice of frequent confession, which the Church has introduced, under the influence of the Holy Spirit, as a means of swifter daily progress along the road of virtue." (97)
Source: Sacerdotii Nostri Primordia (Vatican.va)