One cannot wash a blackamoor white.
More German Proverbs:
O foolish world, why are you scratching around in the dark?German
Friendship with the French is like their wine; exquisite but short lived.
German
A man, a word; a word, a man.
German
That usury is a sin some hold, but take for granted they've no gold.
German
No one sees his own faults.
German
Where friends, there riches.
German