Both life and death manifest in every moment of existence. Our human body appears and disappears moment by moment, without cease, and this ceaseless arising and passing away is what we experience as time and being. They are not separate. They are one thing, and in even a fraction of a second, we have the opportunity to choose, and to turn the course of our action either toward the attainment of truth or away from it. Each instant is utterly critical to the whole world.