[..] When Chao-chou (J. Joshu) asked his teacher Nan-ch’uan (J. Nansen) about the Way, he was told “The Way does not belong to knowing or not knowing. To know is to have a concept; to not know is to be ignorant. If you truly realize the Way of no doubt, it is like the sky: wide open and vast emptiness. How can you say ‘yes’ or ‘no’ to it?” (Green, 1998:11) When the Sixth Patriarch, Hui-neng, (J. Daikan Eno) was teaching the Lotus Sutra to Fa-ta, who had been reciting the sutra for seven years yet did not understand it, Hui-neng said, “The mind has nothing to do with thinking, because its fundamental source is empty.” (Yampolsky, 1967:166) The Mulamadhyamakakarika (and the old Zen masters) knew that “Right knowledge is not right understanding of some thing, but rather to understand that things are empty.” (Cheng, 1991:73) [..]