You can have too much of a good thing.
More Danish Proverbs:
Give a rogue an inch, and he will take an ell.Danish
Peace and a well-built house cannot be bought too dearly.
Danish
He who does look before him, must take misfortune for his earnings.
Danish
He who is fed by another's hand seldom gets enough.
Danish
It is good to make a bridge of gold to a flying enemy.
Danish
He who would close another man's mouth, should first tie up his own.
Danish