Flowing Light Chasing the Sun

What is a sword? It's just a boundary. Yesterday someone saw mercy in the shadow of the sword, but today they see killing. Yesterday there was a man who was a scholar and wrote wildly, but today he is a martial artist and wields a sword to prove the Tao. This is the way to the highest place. With every step forward, the worldly warmth and coldness fade away. Some people choose to shine with the sun and the moon, exchanging ruthlessness for eternal perfection; others would rather lean down to hear the joys and sorrows of a speck of dust. And when he was finally able to face the blazing sun, he could no longer tell whether he was chasing the light that destroyed the world, or whether he was being guided here by that light...