The result of many years of research by Archbishop Vasily (Krivoshein) was the fundamental monograph “St. Simeon the New Theologian (949-1022),” published in 1980 in Paris simultaneously in Russian and French, is the first systematic presentation in Russian church science of the mystical and dogmatic theology of St. Simeon. In the preface, Vasily (Krivoshein) notes that the purpose of this work was “to give a living, objective, well-documented in the words of the Venerable himself. Simeon and, in particular, a truthful image of the great saint, accessible to a wide range of educated readers... and not only to professional Byzantine scholars, or, moreover, only to confessional polemicists.” The undoubted merit of the archbishop was that he was able to present the closest connection between the direct spiritual experience of St. Simeon with the dogmatic teaching of the Orthodox Church, as well as the internal unity of his speculation. Vasily (Krivoshein) comes to the conclusion that at the center of the theological vision of St. Simeon is the Incarnation, which “is the main source of the deification of man, it is also the basis of the Eucharist, which received from St. Simeon has a place in monastic life that,” according to the archbishop, “did not exist among ancient ascetic writers.”