XIII

That Purusha, of the size of a thumb, is like a light without smoke, lord of the past and the future. He is the same today and tomorrow. This verily is That.

In this verse the teacher defines the effulgent nature of the Soul, whose light is pure like a flame without smoke. He also answers the question put by Nachiketas as to what happens after death, by declaring that no real change takes place, because the Soul is ever the same.