现代国家的创建是一个复杂而困难的过程，需要发展强大的制度。

The greatest glory in living lies not in never falling, but in rising every time we fall.

我不需要完美，只需要比昨天更好。

Food security is a global issue that requires local action.

研究明史需要全面理解其独特的社会结构和文化背景。

You cannot always control what goes on outside. But you can always control what goes on inside.