There is only one religion, though there are a hundred versions of it.
George Bernard Shaw, Plays Pleasant and Unpleasant, Vol. II, preface (1898)
Not religious, in this sense, is everyone who is left over when you have counted adherents. The World Christian Database, on which the data is based, use the term ‘nonreligionists’ and defines it as ‘ … encompassing the 2 varieties of unbeliever: (a) agnostics or secularists or materialists, who are nonreligious but not hostile to religion, and (b) atheists or anti-religious/anti-religionists opposed or hostile to religion.
