物理学和数学之间的界限并不像人们想象的那么清晰。

It is when we act freely, for the sake of the action itself rather than for ulterior motives, that we learn to become more than what we were.

The future of food security lies in our ability to adapt and collaborate across borders.

没有什么比魔法的缺失更可怕。

心怀大志，努力工作。