Main principle: to contract (negentropy), jell (crystallize), to form or organize, ignorance or agnoia. Saturn is exceedingly cold and dry which qualifies it as a malefic. The dryness makes distinctions which separate and the cold nullifies or slows activity and togetherness. This can create depression and a lack of understanding of other perspectives. But the coldness allows concentration of molecules (ideas) and the dryness gives it structured form. It signifies responsibility, achievement and discipline.