Lampros Chr. Siasos was born at K. Kerasovo of Mesologi in 1952 by farmer parents. After his studies in Theological School of Thessaloniki, he practiced for five years specialized studies on ancient – greek philosophy in Sorbone, under the supervision of professor P. Hadot. In 1983, he supported in Paris his philosophical treatise, regarding the Theological correspondence of Proklos, and in 1984, his theological treatise in Thessaloniki, regarding the comparative gnosiology of Aeropagitics and Proklos. Since 1985, he teaches “History of Philosophy” in the Department of Theology of A.U.Th. and elective courses of Comparative theology and philosophy.