人性本善，但罪恶的社会环境使人变坏了。

Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them - and then, the opportunity to choose.

量子通信的未来在于全球合作。

对自然的研究是永恒的乐趣。