As a student in St. Petersburg, this son of a former serf helped to organize a Literary and Scientific Society as a countermeasure to unrest among others. Shliapkin began his teaching career in Russian literature, and his lectures were widely attended, including by Roerich. From this he developed a path into ancient Slavic manuscripts and paleography. He also taught ad the Military-Juridical Academy, the St. Petersburg Women’s Pedagogical Institute, and contributed to the Pskov Archaeological Museum. A member of the Society of Lovers of Ancient Literature, he traveled and excavated widely under its auspices.