A man convinced against his will is of the same opinion still.
More German Proverbs:
The dogs bite the last.German
What one is accustomed to in youth, one does in old age.
German
Between neighbours' gardens a hedge is not amiss.
German
With patience and time the mulberry leaf becomes a silk gown.
German
In the evening one may praise the day.
German
The will gives the work its name.
German