A new factor enters the situation when we encounter the influence of ‘scientific socialism.' It is true, the party platform declares that ‘religion is a private affair.' The saving of souls is the only industry that socialism distinctly relegates to private enterprise. Walter Rauschenbusch
In Lincoln's day a President's religion was a very private affair. There were no public prayer meetings, no attempts to woo the Religious Right. Few of Lincoln's countrymen knew anything at all of his religious beliefs. David Herbert Donald
I have always felt that a man's religion was his personal and private affair. Leverett Saltonstall