Never hide your vocabulary.
If you speak to simpletons, you will begin to speak simply to be understood by them. But as you teach yourself to speak simply, you will have inadvertently trained yourself to think simply and in simple-minded terms. You fought for every word you know, and it is with the sacred tools of these words that you communicate your thoughts and intentions to others. Don’t hide your words, just because they won’t be understood. Flaunt what you have fought for!