It is a misleading tendency of our intellect to conceive things as if they were immutable and constant. It often leaves changing and concrete individual objects out of consideration, and lays stress on the general, abstract, unchanging aspect of things. It is inclined to be given to generalization and abstraction. It often looks not at this thing or at that thing, but at things in general. It loves to think not of a good thing nor of a bad thing, but of bad and good in the abstract. This intellectual tendency hardens and petrifies the living and growing world, and leads us to take the universe as a thing dead, inert, and standing still. This error of immutation can be corrected by the doctrine of Transcience taught by Hinayana Buddhism. But as medicine taken in an undue quantity turns into poison, so the doctrine of Transcience drove the Hinayanists to the suicidal conclusion of nihilism. A well-known scholar and believer of Zen, Kwei Fung (Kei-ha) says in his refutation of nihilism:[FN#196] "If mind as well as external objects be unreal, who is it that knows they are so? Again, if there be nothing real in the universe, what is it that causes unreal objects to appear? We stand witness to the fact that there is no one of the unreal things on earth that is not made to appear by something real. If there be no water of unchanging fluidity, how can there be the unreal and temporary forms of waves? If there be no unchanging mirror, bright and clean, bow can there be the various images, unreal and temporary, reflected in it? If mind as well as external objects be nothing at all, no one can tell what it is that causes these unreal appearances. Therefore this doctrine (of the unreality of all things) can never clearly disclose spiritual Reality. So that Mahabheri-harakaparivarta-sutra says: " All the sutras that teach the unreality of things belong to the imperfect doctrine " (of the Shakya Muni). Mahaprajnya-paramita-sutra says The doctrine of unreality is the entrance-gate of Mahayana." [FN#196] See the appendix, chap. ii., 'The Mahayana Doctrine of Nihilism.' 9. Zen and Idealism. Next Zen makes use of Idealism as explained by the Dharmalaksana School of Mahayana Buddhism.[FN#197] For instance, the Fourth Patriarch says: "Hundreds and thousands of laws originate with mind. Innumerable mysterious virtues proceed from the mental source." Niu Teu (Go-zu) also says: "When mind arises, various things arise; when mind ceases to exist, various things cease to exist." Tsao Shan (So-zan) carried the point so far that he cried out, on hearing the bell: "It hurts, it pains." Then an attendant of his asked "What is the matter?" "It is my mind," said he, that is struck."[FN#198] [FN#197] Appendix, chap. ii., 'The Mahayana Doctrine of Dharmalaksana.' [FN#198] Zen-rin-rui-shu.