We look at the world once, in childhood. The rest is memory.

PID控制器的本质在于它能够根据系统的过去和现在状态预测其未来行为。

The only way to make sense out of change is to plunge into it, move with it, and join the dance.

真正的文学没有边界；它超越了时间和空间。

【释义】我善于培养我拥有的浩然之气，用坦荡的胸怀去培养心中的正气。