最痛苦的存在状态是记住未来，尤其是你永远不会拥有的未来。
"The best way to predict the future is to create it."
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
Sometimes you can do everything right and things will still go wrong. The key is to never stop doing right.