10/29/2013

Allen Chen 懷想錄: 樂觀者和悲觀者對社會都有貢獻。樂觀者發明飛機,悲觀者發明降落傘。Both optimists and...

Allen Chen 懷想錄: 樂觀者和悲觀者對社會都有貢獻。樂觀者發明飛機,悲觀者發明降落傘。Both optimists and...: Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute.

樂觀者和悲觀者對社會都有貢...

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