The most important things in our practice are our physical posture and our way of breathing. We are not so concerned about a deep understanding of Buddhism. As a philosophy, Buddhism is a very deep, wide, and firm system of thought, but Zen is not concerned about philosophical understanding. We emphasize practice. We should understand why our physical posture and breathing exercise are so important. Instead of having a deep understanding of the teaching, we need a strong confidence in our teaching, which says that originally we have Buddha nature. Our practice is based on this faith.
