Ouro em Steiner (2007)
To try to clean the horns by any special methods is not at all to be recommended. We must familiarise ourselves with the fast that “dirt” is not always dirt. If, for example. you cover your face with a thin layer of gold, it is “dirt” and yet, gold is not dirt. Dirt is not always dirt. Sometimes it is the very thing that acts as a preservative. (Steiner 2007:38)
STEINER, Rudolf. 2007. The Agriculture Course. (Trans.: George Adams) Shrewsbury: Wilding & Son Ltd.