"Life...is not determined by the existence or non-existence of the physical body. It was never the body that gave us life. We, rather, gave life to the body. The soul is ever-existent." --Paramhansa Yogananda
Yogananda seems to be saying that when Krishna tells Arjuna that his "sorrow is sheer delusion. Wise men do not grieve for the dead or for the living. Never was there a time when I did not exist, or you, or these kings; nor will there come a time when we cease to be" (2.6-12). Krishna is saying you give life to the body, the body does not give life to you.
How does this perspective affect you views of life and death?