Nicolaus Copernicus
!["Toruń portrait" ({{Circa|1580}}){{efn|The oldest known portrait of Copernicus is that on the [[Strasbourg astronomical clock]], made by [[Tobias Stimmer]] c. 1571–74. According to the inscription next to that portrait, it was made from a self-portrait by Copernicus himself. This has led to speculation that the Toruń portrait, whose provenance is unknown, may be a copy based on the same self-portrait.<ref>André Goddu, ''Copernicus and the Aristotelian Tradition'' (2010), [https://books.google.com/books?id=iEjk13-1xSYC&pg=PA436 p. 436] (note 125), citing Goddu, review of Jerzy Gassowski, "''Poszukiwanie grobu Mikołaja Kopernika''{{-"}} ("Search for Grave of Nicolaus Copernicus"), in ''Journal for the History of Astronomy'', 38.2 (May 2007), p. 255.</ref>}}](https://upload.wikimedia.org/wikipedia/commons/e/e2/Nikolaus_Kopernikus_MOT.jpg)
The publication of Copernicus's model in his book '''' (''On the Revolutions of the Celestial Spheres''), just before his death in 1543, was a major event in the history of science, triggering the Copernican Revolution and making a pioneering contribution to the Scientific Revolution.
Copernicus was born and died in Royal Prussia, a semiautonomous and multilingual region created within the Crown of the Kingdom of Poland from part of the lands regained from the Teutonic Order after the Thirteen Years' War. A polyglot and polymath, he obtained a doctorate in canon law and was a mathematician, astronomer, physician, classics scholar, translator, governor, diplomat, and economist. From 1497 he was a Warmian Cathedral chapter canon. In 1517 he derived a quantity theory of money—a key concept in economics—and in 1519 he formulated an economic principle that later came to be called Gresham's law. Provided by Wikipedia