To perceive that form reveals the void, and to see that the void reveals form, is the secret for the overcoming of death. To the extent that one is unaware of space, one is unaware of one's own eternity — it's the same thing!
If you are mindful of death, it will not come as a surprise-you will not be anxious. You will feel that death is merely like changing clothes. Consequently, at that point you will be able to maintain your calmness of mind.
There are two bodies - the rudimental and the complete; corresponding with the two conditions of the worm and the butterfly. What we call "death," is but the painful metamorphosis. Our present incarnation is progressive, preparatory, temporary. Our future is perfected, ultimate, immortal. The ultimate life is the full design.