要理解一个句子的意义，我们必须考虑说话者的意图和话语的背景。
To understand the meaning of a sentence， we must consider the speaker's intention and the context of the utterance.
Our lives begin to end the day we become silent about things that matter.
If we take from the land, we must give back in equal measure.
The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.
