"People who are optimistic see a failure as due to something that can be changed so that they can succeed next time around, while pessimists take the blame for the failure, ascribing it to some characteristic they are helpless to change."

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You complain and demand zero compromise - so the GOP obstructs Obama so the economy doesn't improve - then you complain and demand even more zero compromise. Then you get to blame Obama for the slow recovery, which is sorta like John Wilkes Booth blaming Lincoln for missing the end of a play.

— John Fugelsang