If you want to make a discovery, look for something that is both obvious and invisible.
如果你想有所发现,去寻找那些既显而易见又不可见的事物。
The best way to debug a program is to make it work.
  一切迷信的根源在于人们只关注事情成功的时候,而不关注失败,他们只记住成功,而忽视失败。