Guishan Lingyou
Jap., Isan Reiyu
Mt. Guishan     Spirit Protect
born:  771
died:  853   82 years

place:  China
Chan master:  Baizhang (J., Hyakujo)
Chan disciples:  Yangshan (J., Kyozan),...
stories:

Osho
Isan: No Footprints in the Blue Sky (entire book
uses stories of Guishan).

This, This, A Thousand Times This: The Very
Essence of Zen, ch. 8, ch. 10

Zen: The Diamond Thunderbolt, ch. 2

Hyakujo: The Everest of Zen, ch. 5, ch. 9

Rinzai: Master of the Irrational, ch. 7

Kyozan: A True Man of Zen, ch. 1

No Mind: The Flowers of Eternity, ch. 4, ch. 5

Christianity the Deadliest Poison, and Zen the
Antidote to all Poisons, ch. 8

The Zen Manifesto: Freedom from Oneself, ch.
11

The Great Zen Master Ta Hui, ch, 2, ch. 34
Mt. Guishan is in modern Hunan Province, China.  
It is sometimes romanized as "Weishan", for some
unknown reason.

posthumous name: Dayuan Dashi (Great
Perfection Master)

aka: Kuei Shan (old W.G.)
            oshobob  The Living Workshop                                           
                                                             Zen Masters
One night Isan was in attendance on Hyakujo, sitting
till late in the quietness of the mountain temple.
"Who are you?" Hyakujo asked.

"Reiyu," replied Isan.

"Rake in the fireplace," instructed Hyakujo.

Isan did as he was told and said, "I find no embers
left."

Hyakujo took up the tongs and, raking deep down,
brought up a tiny burning ember, which he showed to
Isan, and said, "Just this, you see!"

Isan was suddenly enlightened.

He bowed deeply and related his point of realization
to Hyakujo, who said, "You have reached a
crossroads on the buddha nature; you should
observe time and causation. When the time comes,
you will realize it, just like remembering something
you have forgotten. It is not obtained from others.
Therefore, when you are enlightened, your original
nature manifests itself. Now you have attained it –
carefully cultivate it."


This is a very significant statement of Hyakujo. You
cannot cultivate enlightenment, that will be phony.
You can walk like a buddha, you can manage to sit in
the lotus posture – it may take a little time for you, the
bones... and particularly people coming from the West
will find it more difficult. Colder countries devise
chairs; hotter countries have no problem in sitting on
the floor. But in colder countries, to sit on the floor is
difficult. So if Buddha is sitting in the lotus posture,
that does not mean that you have to sit in the lotus
posture, only then you will become a buddha. You
can practice it – there are many idiots who are doing
that, unnecessarily torturing themselves.

Buddhahood is your nature, so you cannot cultivate it.
But what Hyakujo means is totally different. He is
saying, “Now that you have attained it – carefully
cultivate it.” This attainment is so new, it is possible to
fall back into darkness. It is possible to start thinking
again that it may have been an imagination. All kinds
of possibilities are there...

                                                        --Osho
                 Isan: No Footprints in the Blue Sky, ch. 1