A 16th-century Spanish theologian and economist who wrote extensively on moral theology, particularly on the concept of usury, and is considered a pioneer in the development of modern economic thought.
MartÃn de Azpilcueta, a 16th century Spanish canonist and theologian, is famously known for formulating the quantity theory of money in 1556, making him an early economist. His groundbreaking work in the field of economics has had a lasting impact, earning him the title "Doctor Navarrus."
Azpilcueta was born on December 13, 1492, in Barásoain, Navarre. He was a relative of Francis Xavier, a prominent Jesuit missionary. Azpilcueta obtained a degree in theology from Alcalá and later earned a doctorate in canon law from the University of Toulouse in France in 1518.
Azpilcueta's academic career was marked by his appointments as a canon law professor at the University of Salamanca from 1524 to 1538, and later at Coimbra University in Portugal from 1538 to 1556. He was invited to teach in Portugal by the kings of Portugal and Spain.
His most notable contribution to the field of economics is his work on the quantity theory of money, which posits that the general price level of goods and services is directly proportional to the amount of money in circulation. This fundamental concept has had a lasting impact on modern economics.
Azpilcueta's most influential work is his "Manual de confesores y penitentes" (Manual for Confessors and Penitents), published in 1549. Originally written in Spanish, the manual went through an astonishing 81 editions by the early 17th century, making it a seminal work in the fields of canon law and ethics.
In addition to his manual, Azpilcueta wrote four appendices, one of which addresses exchange, supply and demand, and money. This appendix, titled "On Exchange," has been translated into English and published in 2014.
Azpilcueta's work has had a profound impact on modern economics, moral theology, and canon law. His manual helped establish moral theology as a distinct discipline, and his contributions to economics paved the way for future economists.
His influence extends beyond the academic realm, as his work has been recognized and honored by several popes. Azpilcueta's humility, disinterestedness, and charity were renowned, earning him a reputation as an "oracle of learning and prudence."
In his later years, Azpilcueta traveled to Rome to defend his friend, Bartolomé Carranza, Archbishop of Toledo, who was accused before the Tribunal of the Inquisition. Although he failed to exculpate the Archbishop, Azpilcueta was highly respected in Rome.
Azpilcueta died on June 1, 1586, at the age of 94, and was buried in the national Church of San Antonio de Portoghesi in Rome.
Born in 1548
A 16th-century Spanish priest, philosopher, and theologian who developed influential concepts in metaphysics, ethics, and law, shaping modern Western philosophy. His works heavily influenced Enlightenment thinkers and the development of international law.
Born in 1493
A 16th-century Renaissance thinker who merged classical learning with Christian values, producing influential works on education, psychology, and social reform.
Born in 1466
A 16th-century Renaissance humanist who advocated for education, tolerance, and critical thinking, and is famous for his witty and insightful writings, particularly "In Praise of Folly".
