It's the most useless. It's good to be violent for one day and cool for ten days.

Mao Zedong.

Cutting bones, such as digging, cutting jade and grinding stones; Learning and pondering is a fortune; A person's knowledge can achieve something, but his bones are like jade.

One cigarette will fail again, three cigarettes, and the other one will kill me, so I will overcome it.

Rome was not built in a day.

A drop of water can wear away stones. It was not built in a day.