Introduction
A good life begins with the heart.
In Chinese, xin (心) is a word under tension. It names the organ that beats in the chest, and it also names the place where thought, feeling, will, and a sense of meaning live. Classical medicine says the heart governs the spirit. Modern science speaks of heart–brain coupling. At the molecular scale there are ion channels opening and closing; at the scale of awareness there is the moment we call being moved. The same heart is written again at every scale.
The Heart Governs the Spirit — A Good Life Begins with the Heart tries to keep those scales in one book:
| Scale | Question | Chapter |
|---|---|---|
| Culture and the classics | What does “the heart governs the spirit” mean? | Chapter 1 |
| Rhythm and life | What does a heartbeat mean? | Chapter 2 |
| Molecule | How does the heart exist in chemistry and electrical signals? | Chapter 3 |
| Cell | How do heart-muscle cells become one beat? | Chapter 4 |
| Organ | How do structure and function meet in the heart? | Chapter 5 |
| System | How does the heart hold circulation and the body’s steady state? | Chapter 6 |
| Awareness | How does the “heart of spirit” open onto lived experience? | Chapter 7 |
| Heart and brain | How do heart and brain couple and fall into rhythm? | Chapter 8 |
| Care | How do we nourish the heart and settle the spirit? | Chapter 9 |
| A life | How does a good life begin with the heart? | Chapter 10 |
The aim is not to crown Chinese medicine or Western medicine the winner. It is to let the heart of flesh and blood and the heart of spirit illuminate each other. The first is the material basis. The second is how that basis shows itself, and the meaning we draw from it. When you finish, I hope you can see the precision of the heart and also hear the rhythm of your own.
The heart dwells in the empty center and governs the five offices. That is why it is called the natural ruler.
— Xunzi, “Discourse on Heaven”