In this shiur, we look at Parshiyyot Tazriya and Metzora in the wider context of the world of tum’a and tahara – purity and impurity. We explore some philosophical ideas behind the laws and rituals of tum’a and tahara (such as found in the Kuzari and in Rav Soloveichik’s Halakhic Man) to enable us to appreciate the meaning behind these abstract concepts.