Still waters run deep

I'm looking for a quote that is basically the opposite of "still waters run deep." It seems I heard one once along the lines of "it's the babbling brook that makes the noise." Is anyone familiar with the quote about the babbling brook?

I'm not. But my question is -- what point are you trying to make with the phrase? There's:

It's the squeaky wheel that gets the grease. Meaning you have to make some noise to get a complaint addressed.

An empty wagon makes the most noise. (Or something like that.) Meaning that noise doesn't equal value or worth. At least that's what I think it means.

I haven't heard the 'babbling brook" saying either - but the word "shallow" seems to be an opposite to the "still waters run deep" saying. Pamela

The traditional phrase is "An empty *vessel* makes the greatest noise". This is the version that Shakespeare knew (he cites it as a proverb in "Henry V"). The point of the saying is that an empty metal vessel (whether a kettle cauldron or tankard) is more reverberant and therefore will make more noise when struck than a full one. (VSD)

There's a double sense to "still" that isn't being captured here: when it comes to water it also means untroubled, calm, smooth -- think of "Lead me beside still waters." (And there's a British sense I've run across where 'still water' is opposed to carbonated water.) I think there's a visual as well aural observation about deep waters folded into this phrase.