the engineer Frank Parsons, the use of the term "vocation" has evolved, with emphasis shifting to an individual's development of talents and abilities in the choice and enjoyment of a career. This semantic expansion has meant some diminution of reference to the term's religious meanings in everyday usage. Literary clarification These books have attempted to define or clarify the term vocation. States of the Christian life and vocation, according to the doctors and theologians of the Church A Theology of the Laity by Hendrik Kraemer Living Your Heart's Desire: God's Call and Your Vocation by Gregory S. Clapper The Fabric of this World by Lee Hardy Your Work Matters to God by Doug Sherman and William Hendricks The Call by Os Guinness The Preaching Life by Barbara Brown Taylor Let Your Life Speak by Parker J. Palmer Lay People in the Church: A Study for a Theology of the Laity by Yves M.J. Congar, O.P. Translated by Donald Attwater 1959 Luther on Vocation by Gustaf Wingren 1957 God at Work: Your Christian Vocation in All of Life by Gene Edward Veith Jr. The Fabric of Faithfulness by Steven Garber, Visions of Vocation by Steven Garber, See also Anticipatory socialization Career and Life Planning Education Profession List of largest employers Effectual calling Otium Religious calling Trade (occupation) Vocational discernment in the Catholic Church Vocational education References External links Center for Applied Research in the Apostolate national, non-profit, Georgetown University affiliated research center that conducts social scientific studies about the Catholic Church. Christian missions Christian terminology Christian religious occupations