“Mixing one's wines may be a mistake, but old and new wisdom mix admirably.”
Other Bertolt Brecht Quotes
The finest plans have always been spoiled by the littleness of them that should carry them out. Even emperors can't do it all by themselves.
Bertolt Brecht 
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Intelligence is not to make no mistakes, but quickly to see how to make them good.
Bertolt Brecht
55% of people like this quote
Society cannot share a common communication system so long as it is split into warring factions.
Bertolt Brecht
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Everyone chases after happiness, not noticing that happiness is right at their heels.
Bertolt Brecht
54% of people like this quote