Bernard Joseph Francis Lonergan  (17 December 1904 - 26 November 1984) was a Canadian Jesuit priest, philosopher, and theologian, regarded by many as one of the most important thinkers of the 20th century. Lonergan's works include Insight: A Study of Human Understanding (1957) and Method in Theology (1972), as well as two studies of Thomas Aquinas, several theological textbooks, and numerous essays, including two posthumously published essays on macroeconomics. A projected 25-volume Collected Works is underway with the University of Toronto Press. He held appointments at the Pontifical Gregorian University, Regis College, Toronto, as Distinguished Visiting Professor at Boston College, and as Stillman Professor of Divinity at Harvard University.
While at the Gregorian University, Lonergan composed a two-volume Latin textbook, De Deo Trino (third edition, 1964). It has recently appeared in the Collected Works together with an interleaf English translation under the title The Triune God: Doctrines (2009) and The Triune God: Systematics (2007). In The Triune God: Doctrines, Lonergan begins with an examination of the dialectical process by which the dogma of the Trinity developed in the first four centuries. This section was previously published in English as The Way to Nicea. The second section of the work advances dogmatic theses on (1) the consubstantiality of the Son with the Father, (2) the divinity of the Holy Spirit, (3) the distinction of the divine persons by relations of origin, and (4) the procession of the Holy Spirit from the Father and the Son (the Filioque). The fifth and final thesis is that the Trinity is a theological mystery in the strict sense and can only be understood analogically. A concluding scholion presents New Testament evidence in favor of the "psychological" analogy of the Trinity. In The Triune God: Systematics, Lonergan develops the theory of intelligible (or spiritual) emanations in God as propounded by Thomas Aquinas. The volume begins with a discussion of the method of systematic theology which seeks an imperfect but highly fruitful understanding of the mysteries of faith by means of analogies. The following chapters develop an analogical conception of the divine processions (as intelligible emanations), relations, persons, and the two missions of the Word and Spirit.

Q: What is Trinitarian theology?
A: a two-volume Latin textbook, De Deo Trino (

Q: Did he believe this?
A: unknown

Q: Did he believe in a certain theory?
A: unknown

Q: Did he study this theory?
A: While at the Gregorian University, Lonergan composed a two-volume Latin textbook,

Q: What is that about?
A: systematic theology which seeks an imperfect but highly fruitful understanding of the mysteries of faith by means of analogies.

Q: Was this recognized by other people?
A: unknown

Q: Did he win any awards?
A: unknown

Q: Was any of his work published?
A: The Triune God: Doctrines (2009) and The Triune God: Systematics (2007).

Q: Did he write any other books?
A: English translation under the title The Triune God: Doctrines (2009) and The Triune God: Systematics (2007).
Were any of them best sellers?
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