有時候，我們會看到泡沫。 有時候，有些事情可以去做。 有時候，唯一的獲勝之道就是不參與。

Communication is dominated by body language, and it’s fun to watch the hand gestures here He’s animating a visual representation of abstract concepts to make them more concrete, maybe tracing diagrams in his head A neat physical manifestation of his instinct for pedagogy