Change with a view to improvement. By her nature as a living organism, the Catholic Church has undertaken numerous reforms in her long history. These have been mainly concerned with the moral and spiritual life of the faithful, by the use of the elaborate legislative, administrative, and ritual means at the Church's disposal. The term "reform" occurs in the first paragraph of the first document issued by the Second Vatican Council in its Constitution on the Sacred Liturgy. And the desire "to impart an ever-increasing vigor to the Christian life of the faithful" (Introduction) runs as a theme through all the conciliar teaching and the post conciliar directives of the Holy See.