When everything is easy one quickly gets stupid.
当每件事都是容易的时候，一个人很快的就会变的愚蠢。
拓扑绝缘体的美在于它们的鲁棒性；它们的表面态受到对称性和拓扑的保护，使它们对某些类型的无序免疫。
书籍是不同世界之间的桥梁。
Never be afraid of the moments--thus sings the voice of the everlasting.
The best actors are the ones who can make you forget they are acting.
引用自海明威《老人与海》，张海迪在演讲中多次引用以表达坚韧精神
A fine remedy for our anxieties over our low status in society may be to travel—whether literally or figuratively, by viewing works of art—through the gigantic spaces of the world.