The trend is your friend until it ends.
The greatest happiness for the laborer consists in having an abundant supply of the necessaries of life.
如果用心一旦松散,那么万事都做不好。如果用心一旦粗疏,那么凡事不能聚精会神。用心一旦固执,凡事就不能见其本来面目。
Sustainable development requires balancing economic growth with ecological protection.