Agnostic

"Bertrand Russell was a well known British philosopher of the 20th century. He was arrested during World War I for anti-war activities, and filled out a form at the jail. The officer, noting that Russell had defined his religious affiliation as 'Agnostic' commented: 'Ah yes; we all worship Him in our own way, don't we.' This comment allegedly 'kept him smiling through his first few days of incarceration.'"

--http://www.religioustolerance.org/agnostic.htm