Hsu-tung:  In Zen, we keep asking who's chanting the name of the Buddha.  All we think about is where is the name of the Buddha coming from.  We keep asking, until we find out who we were before we were born.  This is Zen. We sit with one mind. And if the mind runs off somewhere, we follow it wherever it goes, until the mind finally becomes quiet, until there's no Zen to Zen, no question to question, until we reach the stage where we question without questioning and without questioning we keep questioning. We keep questioning, until we finally find an answer, until delusions come to an end, until we can swallow the world, all its rivers and mountains, everything, but the world can't swallow us, until we can ride the tiger, but the tiger can't ride us, until we find out who we really are.  This is Zen.

Red Pine
Road to Heaven: Encounters with Chinese Hermits
Pg. 95