315. The Buddha's sermon: he held up a flower. His disciples were unresponsive, not knowing what to say or do. Only Mahakashyapa's beautiful smile showed that he alone of all the disciples understood that the Buddha, the flower, and Mahakashyapa himself were one. In the Zen tradition the flower here symbolises the world and how we are one with the world. In the emptiness of the True Self we are boundlessly open and so at one with the flower, the other, the world.