TOMMASE D'AQUINO (1225-1274). Libri quattuor de regimene principum ad Regem Cypri. Item eiusdem De regimene Judaeorum... Paris: Jean Petit, 1509. Postencunabola edition of the political treaty of St Thomas Aquinas, among the fundamental texts of medieval political philosophy. In the De regimene principle, dedicated to the king of Cyprus, Thomas sets out his conception of good governance, outlining the duties of the sovereign, the relationship between political authority and natural law and the pursuit of the common good as an end to government action. 8vo (165 × 100 mm). 164 cards, front page printed in red and black, elegant initial xylographic (lightly burnished). Coeva bonding in parchment with reinforced back always in parchment in the eighteenth century. Origin: notes of ancient possession to the frontispiece and to the looks. (1)