Learned fools are the greatest fools.
More German Proverbs:
Set a fox to catch a fox.German
One does evil enough when one does nothing good.
German
Beware of laughing hosts and weeping priests.
German
Priests and road signs show you the way but don't go with you.
German
Young drinkers, old beggars.
German
He who has no enemies has no friends either.
German