He drops his voice at a very, very low volume when he wants people to key into him, and those things are the skills that we need for the most engaging teachers.
そしてより緊迫した空気へ 聴衆を引き込むときは その声を小さく 小さくひそめるのです この能力こそが 我々が今最も 教師に求めている力なのです