The entrance into Zen is the grasping of one's essential nature. It is absolutely impossible, however, to come to a clear understanding of our essential nature by any intellectual or philosophical method. It is accomplished only by the experience of self-realization through zazen.
Yamada KounIn the same way your life is the continuity of standing up, sitting down, laughing, sleeping, waking up, drinking, eating, and, of course, being born and dying. That is the continuity of the whole universe.
Yamada Koun