What Put Expressions To Words?

What put expressions to words?. I mean we understand what others are saying but what put the expressions to the words?. Because I believe it is not the words we are understanding when someone speaks it is the expression behind them. Have you ever said something to someone and not used them words and they understood what you had said anyway?. Or vice versa?. I'm interested in where the expression comes from not the words because it is the expression we understand. The expression comes from emotion. Where does the emotion come from?. Is it thought?. Where does thought come from?. Is it God? The universe?. I dunno. Is it love? Maybe. Is it happening through you?. Almost certainly. What is Love?. Love is recognising yourself in another. Are we one?. Yes of course how else could we recognise another in ourselves?.