数据抽象是将特定数据集简化为整体的简化表示。

Land is a peculiar commodity, which is different from all others, and the quantity of it is always fixed and limited.

民主是一种机制，确保我们得到的治理不会比我们应得的更好。

Music is the light in the darkness.

Architecture is a social art.

"In the end, we will remember not the words of our enemies, but the silence of our friends."