A chain is as strong as its weakest link.
More Danish Proverbs:
It is folly to take a thorn out of another's foot and put it into your own.Danish
To give counsel to a fool is like throwing water on a goose.
Danish
It is hard to pay for bread that has already been eaten.
Danish
A single bag of money is stronger than two bags of truth.
Danish
There is no use in blowing a fire that burns well.
Danish
Hold your dog in readiness before you start the hare.
Danish