一门科学的历史就是它的问题域的历史。

Your self-worth is determined by you. You don't have to depend on someone telling you who you are.

幸福的幸里面是一个“幸”，不是一个“辛”。  或者理解成，Y=Why=为什么，I=我。幸福里面没有为什么，只有我。 

Small-scale farmers are the backbone of global aquaculture—they deserve our support.

一部小说永远不会完成；它只是被遗弃。