Peter Abelard's SIC ET NON lay in obscurity until the 19th century, when Victor Cousin discovered a full manuscript and a fragment. Since then, another full MS and eight fragments have come to light. Abelard's SIC ET NON presents 158 theological questions, followed by citations from various Church fathers, councils, and creeds. These conflict in their discussion of the matter at hand, some SIC (YES) others NON (NO). Abelard includes the "Gelasian Decretals", showing that all of his citations are from approved works. Abelard was condemned as a heretic and sentenced to perpetual silence (1141), and his writings were included on the list of prohibited works (1563). SIC ET NON is a gem of theological education.