Without freedom, there is no creation.

Sustainability isn’t a trend; it’s our responsibility to the next generation.

Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

敢于求知！要有勇气运用你自己的理智。