In one of his articles, published in the newspaper "Mir", he first claimed that the forefather of the Bulgarian National Revival, Saint Paisius of Hilendar had been born in Bansko, Pirin Macedonia.
The Zograf Monastery owns a library of major significance to Bulgarian culture, preserving medieval manuscripts such as a 15th-century copy of the passional of Saint Naum of Ohrid, the 14th-century passional of Saint Paraskevi, the original draft of Paisius of Hilendar's Istoriya Slavyanobolgarskaya and the History of Zograf.