I’m on the top of the world.
A bad workman quarrels with his tools.
A handful of common sense is worth a bushel of learning.
A little knowledge is a dangerous thing.
A work ill done must be twice done.
Action is the proper fruit of knowledge.
Affairs that are done by due degrees are soon ended.
All time is no time when it is past.
All work and no play makes Jack a dull boy.
An idle brain is the devil’s workshop.
An idle youth, a needy age.
少壮不努力，老大徒伤悲 Better late than never.迟做总比不做好。
Better master one than engage with ten.
Business before pleasure.
Business is business.
Business is the salt of life.
Business makes a man as well as tries him.
Business may be troublesome, but idleness is pernicious.
Business neglected is business lost.
Care and diligence bring luck.