Kleutgen was born in
Dortmund,
Westphalia. He began his studies with the intention of becoming a priest, but owing to the
Protestant atmosphere of the school which he attended, his zeal for religion gradually cooled. From 28 April 1830, to 8 January 1831, he studied philology at the
University of Munich. He was intensely interested in
Plato's philosophy and the
Greek tragic poets. As member of the
fraternity Germania he came under prosecution after political revolts in Munich that were inspired by the
July Revolution in France. He fled to
Jena. In this state he was about to enter upon a secular career, but in
Easter 1832 he entered the theological
academy of Münster, indicating a decisive turn in his convictions. During the preceding years he had imbibed certain ideas from
Lessing's and
Herder's writings, which he could not reconcile with the Christian faith. After several weeks of internal conflict he betook himself to prayer, and to his astonishment many of his difficulties vanished at once; the remainder disappeared gradually. After two terms at Münster he went to the
seminary at
Paderborn, where he was ordained
subdeacon on 22 February 1834. With the
Prussian police attempting to arrest him due to his involvement in the 1830 revolts and also in order to evade
military service, he went to Switzerland. On 28 April he entered the Society of Jesus at
Brig, Switzerland, and, to avoid any trouble with the Prussian Government, he became a naturalized citizen in one of the Swiss cantons, and changed his name to "Peters". After his ordination to the priesthood in 1837 he was professor of ethics in
Fribourg, Switzerland, for two years; he then taught rhetoric in Brig from 1840 till 1843. In 1843 he was appointed professor of rhetoric at the
German College, Rome. In the political unrest of the
1848/49 Revolution in Rome, Jesuits were in danger, so Kleutgen alias Peters lived undercover. ==Career==