Though debts are condemned in the financial world, the world of friendship and love may perversely depend on well-managed debts.
我们正在从基于商品生产的经济转向基于知识生产的经济。
可持续发展的关键在于通过教育和创新不断改善人力资本。
Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow."