Even in abstraction, mathematics has profound real-world applications.
译文：即使只做了一天的夫妻也有百日的恩情，百日夫妻的情感就像大海一样深。赏析：一日，并不是一天，形容很短暂，夫妻关系虽然没有长久维持，分道扬镳后，也是由恩情的，不应该互相把对方视为仇人。生活中，很多夫妻因为各种原因而劳燕分飞。感情破裂无可厚非，好聚好散未尝不可，可有的夫妻却反目成仇，最终酿成悲剧的发生。
树木有根则繁茂，根腐则树枯萎；鱼有水才能活，水干涸了鱼则必死；灯有油才光亮，油尽则灯灭。人有真精神，保护则长寿，戕害则必死。
The world is full of people who have never, since childhood, met an open doorway with an open heart.
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。
In the realm of mathematics, every problem is an opportunity to discover something new.