TONGIORGI, SALVATORE. - Philosopher, b. in Rome on 25 Dec. 1820, d. there on 12 Nov. 1863. He entered the Society of Jesus in 1837. He was professor of philosophy at the Collegio Romano from 1853 until his death.
His *Institutiones philosophiae* (3 vols., 1861) and the *Institutiones compendiariae philosophiae moralis* (1863), notable for the solidity of their doctrine and clarity of exposition, met with favor and had numerous editions. Though influenced by the spirit of his time, he nevertheless departed from scholastic doctrines in not a few questions of ontology, cosmology, and psychology. The best part of his work is the *Logica*, which includes an excellent treatise on dialectics, placed before the major logic.
BIBL.: Sommervogel, VIII, col. 96; Hurter, V, col. 1196; *L'Università Gregoriana del Collegio Romano nel I sec. dalla restituzione*, Rome 1829, pp. 188-89.