When Yang-shan Hui-chi (807-883), as a young monk, paid a visit to the Ch'an master Hsing-k'ung, there was a monk who asked Hsing-k'ung:
-What is the meaning of the Patriarch's coming from the West?
Hsing-k'ung replied:
-Suppose...
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Gravity is the source of lightness,
Calm, the master of haste.
A lone traveller will journey all day, watching over his belongings;
Yet once safe in his bed he will lose them in sleep.
The captain of a great vessel will not act lightly or hastily.
Acting lightly, he loses sight of the world,
Acting hastily, he loses control of himself.