The Meaning of Tomentahara in the Torah

The ramam, for those of you who studied the ramam, I'm sure that you've gotten the understanding of the ramam. The material is extremely dense, tightly packed. It is almost all halacha. And at the end of every great section, the ramam offers a point or two about the meaning of that which is covered. At the end of Tahara, which deals with the most esoteric topic, halacha, kliya soteric topic, of pureed and impurity,. very difficult to grasp the meaning.