If you focus on what you left behind you will never see what lies ahead.
如果你只顾回头看，那么你永远也看不见前方有什么。
Yesterday is the past, the future is yet to come, the most important and the most decisive moment is today.
Focus on the road, and look up at the distance every now and then.
That is the only way that we can run fast and steadily on our life road.
What is clang? And what is llvm? It seems more and more coders are recommending clang to replace gcc as the compiler of C/C++.
Be a first rate version of yourself, not a second rate version of someone else.
做一流的自己，不做二流的别人。
From Judy Garland.
To be the first rate version of yourself, but how to define it?
Maybe the first rate version of yourself is merely the minor rate version of others.
No, no, no, please don't be so pessimistic about the future, please don't be so doubtful about yourself.
If you don't have faith in yourself, you will most likely fail.