It takes a grown-up mind to grasp just how fragile that is against the pull of destructive adult appetites such as greed, bitterness and lust.

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"If the past celebrated lust and greed and love of power, the future will celebrate continence and humility and altruism, " Hamlin Garland said.

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In a survey of 562 adults on those and other social networks, about 70 percent admitted to committing at least one of the Bible's Seven Deadly Sins: gluttony, lust, greed, pride, wrath, envy and sloth.

MSN: Most of Us are Social Media Sinners

Roughly even, at around 30 percent, were greed (craving attention), lust (what it sounds like) and sloth (texting instead of calling, for example, or being online instead of exercising).

MSN: Most of Us are Social Media Sinners