“Out here you better have a gun, and a gun in the wagon ain't good for nothin'.”
Source: The Quick and the Dead (1973), Ch. 5; the statement here wrongly attributed by a character in the story to a Quaker, who are generally pacifists, is actually one usually attributed to the Puritan, Oliver Cromwell.
Context: Out here you better have a gun, and a gun in the wagon ain't good for nothin'. I believe what the old Quaker said,"Trust in the Lord, but keep your powder dry."