目察百步，不能了了，而欲以所见为有，所不见为无，则天下之所无者，亦必多矣。
眼睛看百步以内的东西，尚且没法看得一清二楚，而要把自己看见的就认为是实际有的，没有看见的就认为是没有的，这样的话天下所没有的东西，可就多了。
Intelligence is the ability to predict the future based on past experience.
If you go back a few hundred years, what we take for granted today would seem like magic—being able to talk to people over long distances, to transmit images, flying, accessing vast amounts of data like an oracle. These are all things that would have been considered magic a few hundred years ago.
Overhead, without any fuss, the stars were going out.
The world is a stage, but the play is badly cast.
The world won't remember what you say, but it will never forget what you do.