A room is not a room without natural light.

We are what we pretend to be, so we must be careful about what we pretend to be.

If we don’t do something now, the world our children inherit will be much poorer than the one we were given.

The future of drones is not to replace humans, but to help them do their jobs better.

大自然为所有活动都观察了合适的时间。

创新不仅仅是创造新事物，也是改进已有的事物。

谋划先于行动，就会繁荣昌盛；行动先于谋划，就会失败灭亡。点评：《中庸》曾言「凡事豫则立，不豫则废。」没有事先的计划和准备，做事情很难成功的。