You can learn more about a person from the way they talk about other people than what people tell you about them. Do they respect others? Do they speak negatively? Do they enjoy other people’s ideas? Is no one as smart as them? Also, tune in to their choice of words and their nonverbals such as tone.
How they speak about others can give you an indication of how they interact with the world. And perhaps more importantly, how they will think and speak of you in times of stress (or maybe even every day).