Theorems are the permanent literature of mathematics.
I think I'm afraid to be happy...because whenever I get too happy, something bad always happens.
对物质拓扑相的研究不仅仅是发现新材料;它是关于揭示支配量子世界的基本原理。
Life is a constant struggle between being an individual and being a member of the community.
Science must be a force for good in the world.