They that are against superstition oftentimes run into it of the wrong side. If I wear all colors but black, then I am superstitious in not wearing black. ↗
With respect to the first of these obstacles, it has often been made a matter of grave complaint against Political Economists, that they confine their attention to Wealth, and disregard all consideration of Happiness or Virtue. ↗
Fluorine has a protecting action against caries, but this is a local effect. If you drink it, you are running the risk of all kinds of toxic actions. ↗