"Ne perdez pas votre temps avec des explications, les gens entendent seulement ce qu'ils veulent entendre."

Simplified Meaning:

When you try to explain yourself to others, sometimes they won't listen to what you're really saying. They might have their own ideas in their heads and only pay attention to the parts that agree with what they already think. For example, imagine you are explaining to a friend why you were late to a meeting because of heavy traffic. If they already believe you're always late because you don't care, they might ignore your traffic excuse and just think you're irresponsible again. In many situations, it's better to use your time wisely and focus on things that matter instead of trying to change someone's mind. If someone isn't willing to be open-minded, explaining more won't help. Instead, show through your actions what you're really like. Over time, consistent actions are more powerful than words. This way, people will eventually see the truth for themselves.