Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

摆脱诱惑的唯一方法是屈服于诱惑。

知识只有在它有助于人类解放时才有价值。

正是通过观察和思考的力量，人们才能找到方法。所以我们必须不断挖掘和钻研。