Enduring peace cannot be bought at the cost of other people's freedom.

译文：少年不知道早起勤奋学习，到老了后悔读书少就太迟了。赏析：人在年轻时，精力旺盛，正是勤奋读书，努力奋斗的时候。

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