The 13th-century Spanish Dominican monk, Raymond of Penafort, was a legal specialist, who wrote also in a new way about moral action and guilt. With his work called the 'Summa', he opened up a field of study on application of general principles of morality to concrete and defined actions of human beings as a way of deciding what ought to be done or not done and also whether an act carries guilt. This copy of the 'Summa' was written at St Augustine's, Canterbury, by William de Newintone. The Canterbury copy of the Summa is richly decorated with gold, small pictures at the beginning of major divisions, and flourishes of colour, which expresses the status of the monastery. The list of contents and beginning of the book itself are on this page. The first letter of the book is decorated with a portrait of Raymond of Penafort.