We couldn't afford to tell those kids on the West Side or the South Side, if you work hard, if you study hard, if you're hitting the books, that you're going to be able to afford to go to college.

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And we expect people to earn it -- study hard, work hard for it.

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We work and we hustle, you study hard to get your degree -- because you believe in success and individual initiative.

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The study concludes that more than hard work, entrance into the middle class depends on the choices parents make for their children.

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However, the scientists involved in the study believe nature may have already done the hard work, with reptiles making the toxins safe for their own use.

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Through hard work and perseverance my father got a scholarship to study in a magical place, America, that stood as a beacon of freedom and opportunity to so many who had come before.

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That may be because Americans believe more than Europeans do that hard work is associated with success, wrote Adam Okulicz-Kozaryn, the study's author and an assistant professor at the University of Texas at Dallas.

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"Cutting leaves is hard work, " explains the University of Oregon's Dr Robert Schofield, who led the study.

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