数据抽象是将特定数据集简化为整体的简化表示。
Data abstraction is the reduction of a particular body of data to a simplified representation of the whole.
The greatest journeys are those taken within.
【译文】 孔子说：“父母在世时，不要走远，必须远走时，一定要留下准确的地址。”
每一项伟大突破最开始都是可笑的、荒谬的。事实上，如果它一开始不是可笑和荒谬的，就不是突破。
预测未来的最好方法就是创造未来。
When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.