Quoted from http://www.nytimes.com/2008/09/07/magazine/07awareness-t.html?_r=1&pagewanted=2&sq=social%20awareness%20dunbar&st=cse&scp=1
Quoted from http://www.nytimes.com/2008/09/07/magazine/07awareness-t.html?_r=1&pagewanted=2&sq=social%20awareness%20dunbar&st=cse&scp=1