The key to solving complex problems is often to find the right abstraction that simplifies the problem without losing its essential features.
这就象花一样。如果你爱上了一朵生长在一颗星星上的花,那么夜间,你看着天空就感到甜蜜愉快。所有的星星上都好象开着花。
The best management is a true science, resting upon clearly defined laws, rules, and principles.
儿童书籍应该充满温暖,而不仅仅是说教。