Zen Garden Koan # 25

In the Spirit of Mumon

Koan:
A monk asked Mummu, "My eye cannot see the sun at night."
Mummu said, "Is it the sun that cannot see the I?"

Poem:
The Darkness inside shines bright.
The Radience nobody can see.
Where is dark? Where is light?

Commentary:
Concentrating on darkness, looking at light.
Why does the darkness shine?
Where is the light that cannot be seen?