It is a poor horse that is not worth his oats.
More Danish Proverbs:
He is not a bad driver who knows how to turn.Danish
He that was born under a three-halfpenny planet shall never be worth twopence.
Danish
The used plough shines, standing water stinks.
Danish
Drive not away what never came near you.
Danish
When joy is in the parlour, sorrow is in the passage.
Danish
When mistrust enters, love departs.
Danish