Pastoral Letter on Chastity, by Bishop Joseph F. Martino, Diocese of Scranton, December 8, 2004. May be read online on this page at Catholic Culture. Excerpts are provided on: USCCB Forum, Vol. 16, Nos. 1-2 (Winter/Spring 2005): 3-5, which is available in pdf format at the United States Conference on Catholic Bishops.
Pastoral Letter to Young People on Chastity, by the Episcopal Commission for Doctrine, Canadian Conference of Catholic Bishops, January 2011. Updated March 2011. Available in pdf format on this page of the Diocese of London.
Integral Human Development and Chastity: The Link between Life and Social Ethics, by Fr. David D. Nerbun (2014). Available in pdf format at Academia.edu.
“Humanae Vitae and the Perfection of Love”, by Prof. David S. Crawford, M.T.S., S.T.L., S.T.D., Communio, Vol. 25, No. 3 (Fall 1998): pp. 414-433. Available in pdf format through this page of Communio.
“For God, the Lord of life, has conferred on men the surpassing ministry of safeguarding life in a manner which is worthy of man…. Hence when there is question of harmonizing conjugal love with the responsible transmission of life, the moral aspects of any procedure does not depend solely on sincere intentions or on an evaluation of motives, but must be determined by objective standards. These, based on the nature of the human person and his acts, preserve the full sense of mutual self-giving and human procreation in the context of true love. Such a goal cannot be achieved unless the virtue of conjugal chastity is sincerely practiced. Relying on these principles, sons of the Church may not undertake methods of birth control which are found blameworthy by the teaching authority of the Church in its unfolding of the divine law.” (Second Vatican Council, Pastoral Constitution “Gaudium et Spes”, 51)
“Conscience and the Relation between Truth and Pastoral Practice: Moral Theology and the Problem of Modernity”, by Professor David L. Schindler, Ph.D., Communio, Volume 46.2 (Summer 2019): pp. 333-385. Available in pdf format through this page of Communio.
“It… seems urgently necessary to recover the authentic concept of authority, not only from the formal juridical standpoint, but more profoundly, as a means of guaranteeing, safeguarding and guiding the Christian community in fidelity to and continuity with Tradition, to make it possible for believers to be in contact with the preaching of the Apostles and with the source of the Christian reality itself.” (Saint John Paul the Great, Address to Congregation for the Doctrine of the Faith
November 24, 1995)
‘”Blessed are the clean of heart; they shall see God.” (St. Matthew v, 8)
“I tell you that he who casts his eyes on a woman so as to lust after her has already committed adultery with her in his heart. If thy right eye is the occasion of thy falling into sin, pluck it out and cast it away from thee; better to lose one part of thy body than to have the whole cast into hell. And if thy right hand is an occasion of falling, cut it off and cast it away from thee; better to lose one of thy limbs than to have thy whole body cast into hell.” (St. Matthew v, 28-30)
“Religion, pure and immaculate with God and the Father, is this: To visit the fatherless and widows in their tribulation, and to keep one’s self immaculate from this world.” (St. James i, 27)
“We are all sinners, needing to be purified by the Lord. But it is enough to take a small step towards Jesus to realize that he awaits us always with open arms, particularly in the sacrament of Reconciliation, a privileged opportunity to encounter that divine mercy which purifies us and renews our hearts.” (Pope Francis, Message for World Youth Day 2015)
Lawrence S. Mayer, M.B., M.S., Ph.D. and Paul R. McHugh, M.D., Sexuality and Gender: Findings from the Biological, Psychological, and Social Sciences, in The New Atlantis, Number 50 (Fall 2016): pp. 1-143. May be read online, and available in pdf format, at The New Atlantis.
“New Challenges to Humanae Vitae: Conscience and Discernment”, by Dr. Janet E. Smith, UFL Life and Learning Conference XXVIII (2018): pp. 229-253. Available in pdf format through this page of University Faculty for Life.
“In marriage, as the marriage law declares, the man and woman come together for the procreation of children. Therefore whoever makes the procreation of children a greater sin than copulation, forbids marriage, and makes the woman not a wife, but a mistress, who for some gifts presented to her is joined to the man to gratify his passion. Where there is a wife there must be marriage. But there is no marriage where motherhood is not in view; therefore neither is there a wife.”
“For God, the Lord of life, has conferred on men the surpassing ministry of safeguarding life in a manner which is worthy of man…. The sexual characteristics of man and the human faculty of reproduction wonderfully exceed the dispositions of lower forms of life. Hence the acts themselves which are proper to conjugal love and which are exercised in accord with genuine human dignity must be honored with great reverence.
“Hence when there is question of harmonizing conjugal love with the responsible transmission of life, the moral aspects of any procedure does not depend solely on sincere intentions or on an evaluation of motives, but must be determined by objective standards. These, based on the nature of the human person and his acts, preserve the full sense of mutual self-giving and human procreation in the context of true love. Such a goal cannot be achieved unless the virtue of conjugal chastity is sincerely practiced. Relying on these principles, sons of the Church may not undertake methods of birth control which are found blameworthy by the teaching authority of the Church in its unfolding of the divine law.
“All should be persuaded that human life and the task of transmitting it are not realities bound up with this world alone. Hence they cannot be measured or perceived only in terms of it, but always have a bearing on the eternal destiny of men.”
“[I]t is never lawful, even for the gravest reasons, to do evil that good may come of it (cf. Rom 3:8) — in other words, to intend directly something which of its very nature contradicts the moral order, and which must therefore be judged unworthy of man, even though the intention is to protect or promote the welfare of an individual, of a family or of society in general”