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

To be happy, it is necessary to forget as well as to remember.

没有比一个除了优柔寡断之外没有任何习惯的人更悲惨的了。

过去总是与我们同在，因为它滋养着现在。