"The problem with an economic meltdown is that the responsibility and the challenges to deal with the environment are squandered. That's an age-old battle in terms of the major conflicts in places like Afghanistan, etc. So there are age-old battles that'll keep going on. Unfortunately, man is a very slow learner, and we tend to repeat mistakes, as opposed to learning from mistakes."

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One of the thing about being President - that can't be taught, you have to experience, is - there is the sheer weight of decision making. And when I make a decision to send 17,000 young Americans to Afghanistan - you can understand that intellectually. But understanding what that means for those families, for those young people - when you end up sitting at your desk, signing - a condolence letter to one of the family members of a fallen hero - you're reminded each and every day, at every moment, that - the decisions you make count.

— Barack Obama