You don't have to be a person that's always with somebody to be happy. You can be happy alone.

The multiverse is not a theory, but a consequence of our theories.

Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

天地相互配合，才产生了万物；阴阳相互结合，世界才会变化；行为合乎礼仪，天下才能安定。

解释：所谓把粮食积存在取之不尽的粮仓里，就是要努力从事粮食生产。

The best way to predict the future is to create it.