MARCO THE HERMIT – Ascetic and dogmatic writer. Photius (Bibl., cod. 200) knew nine works by M., without speaking of the man himself. Nicephorus Callistus mentions him in his *Hist. eccl.*, 14, 30, 53, 54 (PG 146) alongside Nilus and Isidore of Pelusium as a disciple of St John Chrysostom, a notice already found in George Hamartolus’s *Chronicon* (PG 110, 734 B); M. would thus have lived in the first half of the 5th century. In any case he must not be confused with the Mark of the *Historia Lausiaca*, 20 ff.
The treatise *De lege spirituali* treats of the spiritual law according to *Rom.* 7:14. Connected with this writing is the short work *De Poenitentia*, which preaches the necessity of penance even for the perfect among monks. *De Baptismo* contains a polemic against the errors of the Messalians regarding this sacrament. Other writings are *Praecepta salutaria ad Nicolaum monachum*; *Disputatio cum quodam causidico*; *Consultatio intellectus cum sua ipsius anima*; *De iuimino*; *In Melchisedek*, a polemic against a heresy that affirmed the divinity of Melchisedek in the sense that he would have been a theophany of the Word not yet incarnate. M. also wrote a polemical work against the Nestorians. At the centre of his interest stands the struggle against the Messalians (v. H. Dörries, *Symeon V. Mesopotamien* [Texte und Untersuchungen, 55, I], Leipzig 1941, pp. 95, 444 ff; E. Klostermann, *Symeon und Macarius*, Berlin 1943, p. 8, n. 1).
V. H
Stock, *Die sogenannten Melchisedekianer*, Leipzig 1928, p. 55 ff. Erik Peterson
For twenty years counsellor to Leopold I, by the prestige of his holiness and by remarkable insights he exercised a beneficent influence on the