Whatever you think of de Sade, he was a complex figure and we should not look for easy answers with him. He was, strangely perhaps, against the death penalty, and he was never put in prison for murders or anything like that.
I like to always remind my dancers about ways to avoid injury. One of the basic ways to avoid injury is to always make sure to stretch and warm up your body. This will loosen up your muscles, which will help to avoid common strain injuries such as shin splints and ankle strains.