I have self-doubt. I have insecurity. I have nights when I show up at the arena and I’m like, ‘My back hurts, my feet hurt, my knees hurt. But, I just want to chill.’ We all have self-doubt. You don’t deny it, but you also don’t capitulate to it. You embrace it.

比喻在趋势或机遇面前，即使能力普通的人也能获得成功

数学是理性的音乐。