When you're depressed, It always helps to lean your head on your arm. Arms like to feel useful.

故事不是一条线，而是一张网。

The bond market is the most important market in the world.

In science, we try to explain what we don't understand. In mathematics, we try to understand what we can't explain.

天地和宇宙虽然广阔，但在更大的尺度上也不过是一小部分。