What did origen do that was signifcant?

What is the conflict for the little match girl? What has the author Tom Baker written? What has the author Charles Hannan written? Where does one find an announcement shortlist for the 2013 Turner Prize? What does callie cuts herself in the the book 'Cut' by Patricia McCormick? What has the author Pier Giorgio Gerosa written? Do specific quotations require page numbers to be placed in parentheses? Does Caroyln Keene have kids? Who has the record for bouncing on a exercise ball? What obstacles did J. R. R. Tolkien have to evercome? Did Dish and Lorena ever marry in Lonesome dove? What is the definition of diffraction grating? Where can I find a list of all the books written by Sandra Brown? Who are Leopardstar's parents? Philip larkin's poem i remember i remember? What is the relationship between Okonkwo and Ikemefuna in Things Fall Apart? How tall was Lord Linlithgow? In the book the giver What happened to the snow? Is the book all shook up a fiction or nonfiction? Who said two roads diverged in a wood and you-i took the one less traveled by and that has made has made all the difference?

What did origen do that was signifcant?