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Expert · Puzzle #155
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"Concentration is the secret of strength in politics, in war, in trade — in short, in all management of human affairs." — Ralph Waldo Emerson
"Concentration is the secret of strength in politics, in war, in trade — in short, in all management of human affairs." — Ralph Waldo Emerson
"My brain is open." — Paul Erdős
"My brain is open." — Paul Erdős