唯一不变的是变化本身。
The only thing that is constant is change.
Hard work, under the old system, meant doing as little as possible.
解释：局势安定的国家，常常是富足的；局势 动乱的国家，常常是贫穷的。
预测未来的最好方式就是创造未来。
You can't please everyone, so just focus on being authentic.
The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.