Chesterton began writing the book in response to Street's 1905 challenge, titled "Mr. Chesterton", and it was first published in 1908. The book was written when Chesterton was an
Anglican. He converted to
Catholicism 14 years later. Chesterton chose the title,
Orthodoxy, to focus on the plainness of the
Apostles' Creed, though he admitted the general sound of the title was "a thinnish sort of thing". == Popular reception ==