P'ang Yun (740-808) was a well known Chinese Zen Layman.
He was once selling bamboo baskets. Coming down off the a bridge, he stumbled and fell.
When Ling-chao saw this she ran to her father's side and threw herself down.
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.