“Zen has nothing to teach us in the way of intellectual analysis; nor has it any set doctrines which are imposed on its followers for acceptance. In this respect Zen is quite chaotic if you choose to say so. Probably Zen followers many have sets of doctrines, but they have them on their own account, and for their own benefit; they do not owe the fact to Zen. Therefore, there are in Zen no sacred books or dogmatic tenets, nor are there any symbolic formulae through which an access might be gained into the significance of Zen. If I am asked what Zen teaches, I would answer, Zen teaches nothing. Whatever teachings there are in Zen, they come out of one’s mind. We teach ourselves; Zen merely points the way. Unless this pointing is teaching, there is certainly nothing in Zen purposely set up as its cardinal doctrines or as its fundamental philosophy.
Zen claims to be Buddhist, but all the Buddhist teachings as propounded in the sutras and sastras are treated by Zen as mere waste paper whose utility consists in wiping off the dirt of the intellect and nothing more. Do not imagine, however, that Zen is nihilism. All nihilism is self-destructive, it ends nowhere. Negativism is sound as a method, but the highest truth is an affirmation. When it is said that Zen has no philosophy, that it denies all doctrinal authority, that it casts aside all so-called sacred literature as rubbish, we must not forget that Zen is holding up in this very act of negation something quite positive and eternally affirmative.”