You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.
你不能希望在不改善个人的情况下建立一个更好的世界。为此，我们每个人都必须为自己的改进而努力，同时也要为全人类承担共同的责任，我们的特殊职责是帮助那些我们认为我们最有用的那些人。
The past is always present, and the present is always past.
有时候，解决一个案件最难的部分是面对真相。
材料中拓扑和对称性之间的相互作用可以导致意想不到且令人兴奋的物理现象。