Education is an admirable thing. But it is well to remember from time to time that nothing that is worth knowing can be taught.
教育事业是值得钦佩的，但请不时想起：并没有什么值得知道的事是能够被传授的。
Take time every day to do something for yourself.
"The past is a ghost that refuses to leave."
I don't make music for the money, I make money from the music.
The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay of symmetry and topology leads to novel quantum states of matter.
