When you solve a mathematical problem, you don't just get the answer - you understand why it's the answer.

臣民的政治自由是每个人对自己安全感的平静心态。

A long habit of not thinking a thing wrong, gives it a superficial appearance of being right.

教育不是填满一个桶，而是点燃一把火。

化学的未来在于开发与自然合作而非对抗的可持续方法。

Success is not final, failure is not fatal: It is the courage to continue that counts.