Tomus I - 1896r., 536s.
Tomus II - 1897r., 869s.
Nikolaus Nilles (21 June 1828–31 January 1907) was a Roman Catholic writer and teacher.
He was born into a wealthy peasant family of Rippweiler, Luxembourg. After completing his gymnasium studies brilliantly, he went to Rome where from 1847 to 1854, as a student of the Collegium Germanicum, he laid the foundation of his ascetic life and, as a pupil of the Gregorian University, under the guidance of distinguished scholars (Antonio Ballerini, Johann Baptist Franzelin, Carlo Passaglia, Giovanni Perrone, Francis Xavier Patrizi, Clement Schrader[citation needed] and Camillo Tarquini), prepared the way for his subsequent scholarly career.[1]
When he left Rome in 1854, he took with him, in addition to the double doctorate of theology and Canon law, two mementoes which lasted throughout his life: his grey hair and a disease of the heart, possibly the result of his experiences in Rome in the revolutionary year 1848-9. From 1853 to 1858 he labored in his own country as chaplain and parish priest, and during this time made his first literary attempts. In March, 1858, he entered the Austrian Province of the Society of Jesus and, in the autumn of 1859, was summoned by his superiors to Innsbruck to fill the chair of canon law in the theological faculty, which Emperor Francis Joseph I had shortly before entrusted to the Austrian Jesuits.[1]
Nilles lectured throughout his life — after 1898 usually to the North American theologians, to whom he gave special instructions on canonical conditions in their country, for which task no one was better qualified than he. His Commentaria in Concilium Baltimorense tertium (1884–90) and his short essay, Tolerari potest, gained him a wide reputation. Martin Blum enumerates in his by no means complete bibliography fifty-seven works, of which the two principal are: De rationibus festorum sacratissimi Cordis Jesu et purissimi Cordis Mariae libri quatuor (2 vols., 5th ed., Innsbruck, 1885) and Kalendarium manuale utriusque Ecclesiae orientalis et occidentalis (2 vols., 2nd ed., Innsbruck, 1896). Through the latter work he became widely known in the world of scholars. In particular Protestants and Orthodox Russians expressed themselves in terms of the highest praise for the Kalendarium or Heortologion
