过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。
The most important political development of the last half century has been the spread of liberal democracy around the world.
中国文化的真正精神在于其能够吸收外来元素而不丧失自身特性。
创新不仅仅是创造新事物，更是以有意义的方式解决实际问题。
If you can imagine it, and believe it, you can achieve it.