Here's an idea: Saying almost nothing can mean a lot more than saying almost everything. Let's look at a couple scenes from 2014's The Drop.
Bob (Tom Hardy) only says a few lines in the scene above while Marv (James Gandolfini) does the majority of the talking. It's easy to see the dynamic between the two characters and how they feel about one another, etc.
But take note of the way Hardy moves and reacts to Gandolfini's dialogue. He's the one who is in control of himself. Even though Marv is talking as if he has the power between the two of them, it's Bob that has all of it. He's calm and he's collected and in a way, it's like Marv is really talking about himself.
The way the scene cuts back-and-forth as if they are both speaking is important as well. Hardy's subtle movements in his chair, the way he creaks his neck towards Gandolfini, it's like we already know what he's going to say before he says it.
Let's take a look at the scene above between Bob and Nadia (Naomi Rapace).
The first 12-13 seconds of the scene is complete silence between the two characters. Bob's actions before and after looking at Nadia's scars are what's important here. We can already tell that he is perfectly fine without asking about it, even as the conversation starts.
Again, Nadia is doing most of the talking but Bob is in control of the scene. Nadia explains her scars without Bob asking and continues to do so until the scene ends.
In the two aforementioned scenes, the quiet demeanor of Tom Hardy's character turns Bob into a tool for the other characters. Both Nadia and Marv talk about themselves to Bob -- who rarely talks about himself through the film.
And how often are we doing this in our real lives? Many of our conversations, usually, deal with what we have done or about to do. We listen to other people's stories only so we can tell our own to them when they're finished.
I'm not saying this is a terrible thing, it's human nature. But sometimes, we should try to listen for something that can't always be heard.