It is this quality that is symbolised in dreams. We are able to extract from our experiences in life what is useful to us and can convert it into nourishment.
2- There is a transformation which occurs when a material is ground, and any dream containing a mill will signify that transformation.
The two stones arc said to signify will and intellect, the tools we use in transformation.
3- Transformative energy, turning the crude into the usable.