The best way to test a program is to test it.

能源的未来是多样化的，没有任何单一来源会占主导地位。

人心比万物都诡诈，坏到极处，谁能识透呢？

The poor often lack the information needed to make good choices, and when they do have it, they often don’t trust it.

The most important victories are the ones that come after the toughest defeats.