When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.
A good abstraction is one that emphasizes the important details and suppresses the unimportant ones.
一个好的抽象是强调重要细节并抑制不重要细节的抽象。
书籍是飞机，是火车，是道路。它们是目的地，也是旅程。它们是家。