Seneca said that if you're trying to teach someone something, you shouldn't be trying to do so with some long speech or public soliloquy. As teachers, and we're all teachers in some way, it's important to remember that saying true or correct things to someone isn't the same as teaching them. How you communicate what you're teaching is as important as the accuracy of what you are teaching. Someone can understand more easily if you explain it patiently, quietly, and simply.