The key to making money in stocks is not to get scared out of them.
我愿你快乐，即使你的快乐不再是因为我。
To overcome the anxieties and depressions of contemporary life, individuals must become independent of the social environment to the degree that they no longer respond exclusively in terms of its rewards and punishments.
NP完全性的概念为理解问题的复杂性提供了一个强大的工具。
If you love what you do, you'll never work a day in your life.