The strength of a nation's institutions is not just in their formal rules, but in the informal norms that govern behavior and the degree to which they are internalized by the population.

质量比数量更重要，一个全垒打比两个二垒安打好得多。

We must balance the need for energy with the need to protect the environment.

改变始于一小步，但需要集体的努力才能持久。