Joshu asked Nansen, “What is the Way?” Nansen answered, “Your ordinary mind–that is the Way.” (州云、還可趣向否) Joshu said, “Can it be grasped (for study)?” Nansen replied, “The more you pursue, the more does it slip away.” Joshu asked once more, “How can you know it is the Way?” Nansen responded, “The Way does not belong to knowledge, nor does it belong to non knowledge. Knowledge is illusion. Non knowledge is beyond discrimination. When you get to this Way without doubt, you are free like the vastness of space, an unfathomable void, so how can you explain it by yes or no?”
Upon hearing this, Joshu was awakened.
^ Traditional Zen Story ("Case 19: Nansen's Ordinary Mind")
The five colours blind the eye.
The five tones deafen the ear.
The five flavours dull the taste.
Racing and hunting madden the mind.
Precious things lead one astray.
Therefore the sage is guided by what she feels and not by what she sees.
She lets go of that and chooses this.
^ Dao De Jing Chapter 12
The eye never has enough of seeing,
nor the ear its fill of hearing.
What has been will be again,
what has been done will be done again;
there is nothing new under the sun.
Is there anything of which one can say,
“Look! This is something new”?
I said to myself, “Look, I have increased in wisdom more than anyone who has ruled over Jerusalem before me; I have experienced much of wisdom and knowledge.” Then I applied myself to the understanding of wisdom, and also of madness and folly, but I learned that this, too, is a chasing after the wind.
^ Ecclesiastes 1 (excerpts)