商场如战场，防人之心不可无。  

If I had to live my life over again, I would live it as a trader of goods.

The art of writing is the art of discovering what you truly believe.

Security is not an add-on feature but the foundation.

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.

历史就是现在。这就是为什么每一代人都要重新书写它。但大多数人认为的历史是其最终产物——神话。