Zen practice is throwing away one's preconceived views along with the sacred texts, and then penetrating the layers covering the self.
All of the awakened ones have turned within and sought the self, and by doing this they went beyond doubt.
It is then that thinking comes to an end, and making distinctions ceases; wrong views and ideas disappear of themselves; and true action and true impulse appear.
Then one can know the truth.
~Daikaku (1203-1268)
A person of the Way fundamentally
Does not dwell anywhere.
The consistent action of
People of the Way is
Like the flowing clouds
With no grasping mind;
Like the full moon reflecting universally,
Not confined anywhere.
Thus have we heard:
The mind that
Embraces the ten directions
Does not stop anywhere.
- Hung–Chih (1091-1157)