There are no limits to your understanding, only those that are due to trying to understand with the mind.

There was a wall in a village that existed for ages, and many tried to climb it but few succeeded. Those who had climbed it saw something beyond, smiled, climbed over the wall and never returned. The people of the town began to wonder what magic could be there and what attraction, that whoever climbed over the wall never returned. So they said, “We must send someone who can reach the top, but we must tie him with a rope to hold him back.” When the man they had sent reached the top of the wall, he smiled and tried to jump over it, but they pulled him back. When the people asked, “What did you see there?” he could not answer, he could only smile.

Death is afraid of such powerful brahmacharins who come of their own accord to his door. This stems from a very basic principle of nature. Whatever you treasure most, you love most, desire most in life, and would liike to have, would like to keep, you turn away from it a little, surrender it a little and it will remain yours. On the opposite hand, whatever you detest most in life, absolutely dislike, just turn to it a little and it will stay away from you. It is the principle of innoculation. It applies to all sciences. Poison is cured by poison. Everything is its own antidote. So life has death built into it. The only way to master death is not to run away from it, but to turn to it a little, recognize it daily.

What you resist you're stuck with.