道德经注解（四十）：天下之至柔，驰骋天下之至坚

The world is soft, and the world is strong.There is no immersion. I am beneficial to knowing nothing. I do not speak of teaching, and nothing is beneficial, which is rare in the world. ** ** * * Note: The softest things in the world can move around in the strongest, and the invisible and formless things can enter the void of nothingness, so I can know that the benefits of inaction are manifested in this way: if you can teach, inaction can be beneficial, and few people in the world can do it. * *