The past is a foreign country; they do things differently there.
过去是一个陌生的国度；他们在那里做事的方式不同。
Difficult circumstances serve as a textbook of life for people.
The mind is a continuous stream of events.
The more you read, the more things you will know. The more that you learn, the more places you'll go.
Understanding the real lives of the poor is the first step toward designing effective policies to help them.