求知若饥，虚心若愚。

Our descendants will achieve things that will amaze us， yet a portion of what they will create could have been made with today’s materials and tools if we had had the imagination. Think bigger.

我根本不是一个思维敏捷的人。我必须花很多时间才能理解一些东西。

译文：水源都搞脏了还想水流清澈，木头都弄弯了还想要影子笔直——做梦!