information:filtering, structural:reformatting
Letter writer

Writers of letters use a reliable form of transmission of messages between individuals, and surviving sets of letters provide insight into the motivations, cultural contexts, and events in the lives of their writers. Peter Abelard (1079–1142), philosopher, logician, and theologian is known not only for the heresy contained in some of his work, and the punishment of having to burn his own book, but also for the letters he wrote to Héloïse d'Argenteuil (1090?–1164).

The letters (or epistles) of Paul the Apostle were so influential that over the two thousand years of Christian history, Paul became "second only to Jesus in influence and the amount of discussion and interpretation generated".