经济周期并不像曾经认为的那样仅仅是围绕稳定趋势的波动,而是反映了经济中更深层次的结构性变化。
世界上充满了故事,但最好的故事是我们亲身经历的。
美存在于观察者的适应机制中。
The future belongs to those who prepare for it today.
The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.