Leadership means having the courage to make tough decisions today for a better tomorrow.

The old believe everything; the middle-aged suspect everything; the young know everything.

读书人虽然有学问，但只有知行合一，把学问付诸于生活实践，才是最根本的。否则的话，就是《弟子规》上讲的“不力行，但学文，长浮华，成何人”了。

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.

I don't fear failure. I fear not trying.