Now, from studying Bhagavad-gita or deeply thinking over the matter, I come to understand that I am not this body. That is settled. That's all right. But actually I am working on bodily plane. This adjustment is required, that yes, you, for the present moment, because you are entangled or enwrapped within this, encaged within this body, so you cannot say that "I will work without this body." But you can work in such a way that even without this body, even with this body you can work in your spiritual platform. Although I am in this bodily conception of life, still, I can work from the spiritual platform. That technical knowledge is instructed by Lord Krsna to Arjuna, that "You are not this body, but you have to work at the same time."
Lecture on Bhagavad-gita, New York, April 1, 1966