Jerome D'Costa's Bengali-language translation of the 'Humane Vitae' -- 1968 encyclical letter of Pope Paul VI on the regulation of birth. Addressed to patriarchs, archbishops, bishops, priests, the faithful of the Catholic Church and all men of goodwill, this letter speaks of the (I) Problem and Competency of the Magisterium [teaching authority of the Church]: new questions, interpreting the moral law, special studies, and the Magisterium's reply; (II) Doctrinal Principles: God's loving design, married love, responsible parenthood, observing the Natural Law, union and procreation, faithfulness to God's design, unlawful birth control methods, lawful therapeutic means, recourse to infertile periods, consequences of artificial methods, limits to man's power, and concern of the Church; and (III) Pastoral Directives: value of self discipline, promotion of chastity, appeal to public authorities, to scientists, to Christian couples, recourse to God, family apostolate, to priests, and bishops.