A thorough understanding of the Iconoclast period in Byzantium is complicated by the fact that most of the surviving sources were written by the ultimate victors in the controversy, the iconodules. It is thus difficult to obtain a complete, objective, balanced, and reliably accurate account of events and various aspects of the controversy. The period was marked by intensely polarized debate amongst at least the clergy, and both sides came to regard the position of the other as heresy, and accordingly made efforts to destroy the writings of the other side when they had the chance. Leo III is said to have ordered the destruction of iconodule texts at the start of the controversy, and the records of the final Second Council of Nicaea record that books with missing pages were reported and produced to the council. Many texts, including works of hagiography and historical writing as well as sermons and theological writings, were undoubtedly "improved", fabricated or backdated by partisans, and the difficult and highly technical scholarly process of attempting to assess the real authors and dates of many surviving texts remains ongoing. Most iconoclastic texts are simply missing, including a proper record of the council of 754, and the detail of iconoclastic arguments have mostly to be reconstructed with difficulty from their vehement rebuttals by iconodules.