1. Meaning: I (heart) am the light of the world. I am the one who can know, be aware, and understand. I am never alone. I feel that I am a human being, just like when I am watching a movie, I am an eternal existence.
2. Explain that all actions are determined by thoughts, so in order to achieve correct actions, one must cultivate the mind and reach the state of knowing good and knowing evil. The brightness of this heart is exactly the state of knowing good and knowing evil.
3. Therefore, it is said that "this heart is bright, what can I say?" It is not that I don't say it, but that I have made it clear.
4. Author: Wang Yangming
5. Source: Chapter 16 of "This Heart Is Bright: The Biography of Wang Yangming"