In the short story, [Reginald's Choir Treat][1], Saki writes:
>“You are really indecently vain of your appearance.  A good life is infinitely preferable to good looks." 
>
>"You agree with me that the two are incompatible.  I always say beauty is only sin deep.”

What does "beauty is only sin deep" mean? Is Saki implying that sin is required to attain, or maintain, one's beauty?


  [1]: https://www.gutenberg.org/files/2830/2830-h/2830-h.htm