In this way Zen does not trouble itself about unessentials of the Scriptures, on which it never depends for its authority. Do-gen, the founder of the Japanese So To Sect, severely condemns (in his Sho-bo-gen-zo) the notions of the impurity of women inculcated in the Scriptures. He openly attacks those Chinese monks who swore that they would not see any woman, and ridicules those who laid down rules prohibiting women from getting access to monasteries. A Zen master was asked by a Samurai whether there was hell in sooth as taught in the Scriptures. "I must ask you," replied he, "before I give you an answer. For what purpose is your question? What business have you, a Samurai, with a thing of that sort? Why do you bother yourself about such an idle question? Surely you neglect your duty and are engaged in such a fruitless research. Does this not amount to your stealing the annual salary from your lord?" The Samurai, offended not a little with these rebukes, stared at the master, ready to draw his sword at another insult. Then the teacher said smilingly: "Now you are in Hell. Don't you see?" Does, then, Zen use no scripture? To this question we answer both affirmatively and negatively: negatively, because Zen regards all sutras as a sort of pictured food which has no power of appeasing spiritual hunger; affirmatively, because it freely makes use of them irrespective of Mahayana or Hinayana. Zen would not make a bonfire of the Scriptures as Caliph Omar did of the Alexandrian library. A Zen master, having seen a Confucianist burning his books on the thought that they were rather a hindrance to his spiritual growth, observed: "You had better burn your books in mind and heart, but not the books in black and white."[FN#124] [FN#124] Ukiyo-soshi. As even deadly poison proves to be medicine in the band of a good doctor, so a heterodox doctrine antagonistic to Buddhism is used by the Zen teachers as a finger pointing to the principle of Zen. But they as a rule resorted to Lankavatara-sutra,[FN#125] Vajracchedika-prajnya-paramita-sutra,[FN#126] Vimalakirtti-nirdeca-sutra[FN#127] Mahavaipulya-purnabuddha-sutra[FN#128] Mababuddhosnisa-tathagata-guhyahetu-saksatkrta-prasannatha-sarvabhodhi sattvacarya-surangama-sutra,[FN#129] Mahapari-nirvana-sutra,[FN#130] Saddharma-pundarika-sutra, Avatamsaka-sutra, and so forth. [FN#125] This book is the nearest approach to the doctrine of Zen, and is said to have been pointed out by Bodhidharma as the best book for the use of his followers. See Nanjo's Catalogue, Nos. 175, 1761 177. [FN#126] The author of the sutra insists on the unreality of all things. The book was first used by the Fifth Patriarch, as we have seen in the first chapter. See Nanjo's Catalogue, Nos. 10, 11, 12, 13, 14, 15.