When you are young, you think that the world is a place where you can live as you choose. But as you get older, you realize that the world is a place where you have to live as you must.
经济学家最重要的技能是清晰地思考权衡取舍。
The choices we make today will shape the world of tomorrow.
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.
The only thing that counts is what cannot be explained.
