To say something is to perform an action， and to perform an action is to do something with words.

农业的成功来自于对土地和市场的双重理解。

I was told I had the voice of a choirboy but the look of a headmistress.

创新不仅仅是关于新想法，而是以精确和激情去执行它们。

概率既由我们观察的性质决定，也由我们的理性观念决定。

最好的投资是对人及其潜力的投资。

质量不是一种行为，而是一种习惯。