I had a student in my office today. He wasn't one of my regulars. He was pretty confused. My temptation, of course, was to run off at the mouth. "Let's do this example. Let's do that example. Look how easy it is when I do it." But I resisted. He was processing, but he was processing very slowly. So I had to remind myself to just shut up and let him think. It took time. But he got it. I need to remind myself of the importance of silence.