I have self-doubt. I have insecurity. I have fear of failure. I have nights when I show up at the arena and I’m like, “My back hurts, my feet hurt, my knees hurt. I don’t have it. 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.

I'm not afraid of dying, I'm afraid of not trying.

创新不仅仅是创造新事物；它关乎改变人们的生活。