数据抽象是将特定数据集简化为整体的简化表示。

Language is a skin: I rub my language against the other. It is as if I had words instead of fingers, or fingers at the tips of my words.

When a professor insists computer science is X but not Y, have compassion for his graduate students.

When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.

The deterioration of every government begins with the decay of the principles on which it was founded.

我了解到你不可能取悦每个人，这没关系。