燕子来时新社，梨花落后清明。
燕子飞来时正值春社，梨花凋落后便是清明时节。
无人机的未来不是替代人，而是赋能人。
"The past is not a place to live, but a place to learn from."
错误同真理的关系，就象睡梦同清醒的关系一样。一个人从错误中醒来，就会以新的力量走向真理。
There's a tendency to think that our present politicians are much worse than we had in the past.But we tend to forget how awful our politicians were in the past.