But weirdly, hardy anyone had scientifically investigated this, until a truly extraordinary person I got to know, named professor Tim Kasser, who's at Knox College in Illinois, and he's been researching this for about 30 years now.
Estranhamente, quase ninguém tinha investigado isto cientificamente, até que conheci uma pessoa extraordinária, o professor Tim Kasser, que está no Knox College em Illinois, e tem investigado isto há 30 anos.