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Europeans often argue that Americans have an unreasonable demand for " perfect " security , the product of living for centuries shielded behind two oceans.5 Europeans claim they know what it is like to live with danger , to exist side-by-side with evil , since they've done it for centuries . The welfare and rising standards of living of billions of people depend on that . And as you know , in Thomas Aquinas what is essential for man is his intellect , which does n't mean his shrewdness , but his ability of living in meanings and in structures of reason . Traits of poise , ability to communicate , basic social skills , personal qualities and general attitudes about living in groups and residential settings will be assessed . This made me wonder - yet again - about why some animals seem so much better than others at living around humans .