The causal model is the key to making sense of the world.

I'm like a dog, I don't speak but I understand.

百姓如果没有粮食，就不能供君王役使。所以，粮食不可不努力耕种，用度不可不厉行节俭。 

数学是为不同事物赋予相同名称的艺术。

Violence is not just physical; it's embedded in our systems and structures.

The mind is a complex system that can be analyzed at multiple levels.