The beauty of topological insulators lies in their robustness; their surface states are protected by symmetry and topology, making them immune to certain types of disorder.

Success is a journey, not a destination. It's about the progress you make along the way.

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

处理一个不自由的世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。