如果你想快乐，那就快乐吧。

你在低谷时做的事情比在好日子时做的更重要。

Come,my friends,Tis not too late to seek a newer world,For my purpose holds to sail beyond the sunset，And though we are not now that strength which in old days moved earth and heaven,That which we are, we are;-- One equal temper of heroic hearts, Made weak by time and fate, but strong in will. To strive, to seek, to find, and not to yield。

Sustainable development requires balancing economic growth with ecological protection.

The heart is a strange thing. It can be broken and still keep beating.

科学的挑战不仅在于找到答案，还要理解其更深层次的含义。

Innovation is not a slogan, but something we do every day.

Smart infrastructure will redefine urban development.

The pursuit of mathematical truth is a noble endeavor.