“Suppose you recite the Prajna Paramita Sutra only once. It might be a very good recitation. But what would happen to you if you recited it twice, three times, four times, or more? You might easily lose your original attitude towards it. The same thing will happen in your other Zen practices. For a while you will keep your beginner’s mind, but if you continue to practice one, two, three years or more, although you may improve some, you are liable to lose the limitless meaning of original mind.”
