Ta-mei Fa-chang (752-839) was a Chinese Ch'an master. After he got awakened under the Great master Ma-tsu Tao-i (709-788), he went to the Ta-mei mountain and resided there.
One day there was a traveling monk who got lost in the Ta-mei...
When beauty is abstracted
Then ugliness has been implied;
When good is abstracted
Then evil has been implied.
So alive and dead are abstracted from nature,
Difficult and easy abstracted from progress,
Long and short abstracted from contrast,
High and low abstracted from depth,
Song and speech abstracted from melody,
After and before abstracted from sequence.