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。

To be a poet is to have a soul so quick to discern, that no shade of quality escapes it.

The power of randomness in algorithms is that it can help us find solutions that are difficult to discover through deterministic methods.

希望是一幅美好的早餐，但却是一顿糟糕的晚餐。