The power of causal reasoning is that it allows us to predict the effects of actions we have never taken.

唯一把我们和动物区分开的是我们装饰自己的能力。

The beauty of the universe lies in its complexity and the simplicity of the laws that govern it.

世界需要可靠的能源，而煤炭仍然在其中发挥着关键作用。