The rise of China and the resurgence of Russia have challenged the idea that liberal democracy is the only viable form of government.

银行不是当铺，银行是信用中介。

当你不再试图理解这个世界时，它几乎就是和平的。

It is forbidden toLove truth only when she shines on you； but when she turns to go away from you， let her go.

在物理学中，近似的艺术往往比追求精确解更重要。