I thought it's 1 at first, almost confidently, but after I Googled it, I've got confused since many people say different things.
In the book now I'm reading, the phrase is used in the scene where a girl doesn't want to reveal her secret to another girl who is doubting if she is lying. So I thought it is the doubt the second girl has. However, the first girl is not sure and wondering about
... be thought a fool ... (Other people will think you are a fool; think that you may be a fool.) ... remove all doubt. (Instead of thinking, it will be knowing. Now that any doubt is removed, other people will know you are a fool; know that you certainly are a fool.)
... remove all doubt about whether you are a fool wou
I was wondering whether to "speak" means to "ask" or to "tell", but it seems it can be both.
So if someone asks me, "how is it better?" I can say "it's better because they can't get the proof that you are a fool as long as you don't say anything." Right?