“The question is,” said Alice, “whether you can make words mean so many different things.”
“The question is,” said Humpty Dumpty, “who is to be master. That is all.”
Language cannot be relegated to its mere definition, but rather must be interpreted into its meaning. Therefore the better we know the speaker, the more we are able to understand their thought, the better we are able to understand their language. Robert Lewis Stevenson said "All speech, written or spoken, is a dead language, until it finds a willing and prepared hearer." That prepared hearer means someone who is willing to listen not only in his own language, but also to learn a bit of the speaker's language as well.