南泉一文字

The Zen koan of Nansen and the cat is one of the most famous stories in East Asian Buddhism. The Tang-dynasty master Nanquan Puyuan holds a cat before his monks and says: 'Someone say a true word, or I will cut this cat in two.' No one can speak. Nansen kills the cat. Later, his disciple Zhaozhou returns and, on hearing the story, silently puts his sandal on his head and walks out. Nansen says: 'If Zhaozhou had been here, the cat would have been saved.' This story asks: what is the word that transcends life and death? What action is beyond dualistic thinking? The sword that takes this story as its name carries an extraordinary philosophical burden: it is simultaneously an instrument of killing and a question about killing. To name a blade after the moment a master cuts through the distinction between right and wrong, life and death, is to make the sword itself a koan — an object that demands of its holder the same impossible clarity it demands of the monks in the story. For a warrior, this was not an abstract question. The Maeda lords who kept this sword in their Kaga castle were among the most cultivated men in Japan; the idea that the most beautiful blade in their collection was named after a Zen story about the killing of a cat suggests an ironic self-awareness about their own position — men who owned the power of life and death, struggling to understand what that power meant.