"I've been there and I thought I saw a thought or two about it another time, but hadn't pursued it. It didn't seem terribly important but now it might be rather useful. I'm not reading your mind at the moment as I'm sure you can tell,"

As the cabinets shake, Charles pours out the tea, he's not going to be intimidated by that. He has not gone into Erik's mind since they first met without being invited.