It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.

It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.

让你陷入麻烦的不是你不知道的事情。你所知道的肯定不是这样的。

-- Mark Twain 马克·吐温