Plain Facts for Old and Young by John Harvey Kellogg

29. _Unnatural paleness_ and colorless lips, unless they can be

otherwise accounted for, may be attributed to secret sin. The face is a great tell-tale against this class of sinners. Justice demands, however, that an individual should be given the benefit of a doubt so long as there is a chance for the production of these symptoms by any other known cause, as overwork, mental anxiety, or dyspepsia.