Eat and drink with your friends but do not trade with them.
More Traditional Proverbs:
A man should wander about treating all creatures as he himself would be treated.Traditional
Cover a lot of ground.
Traditional
A strong person and a waterfall always channel their own path.
Traditional
Slow as molasses in January.
Traditional
Where there is no rapport there is no sale. Enrolling people in your product or service is the same as enrolling them in you.
Traditional
Every stick has two ends.
Traditional