tl;dr?
Furthermore, he's found he prefers to select hard workers and promote them up than to pick smart, ambitious kids from good families or good credentials. Hard work is better than sheer brilliance.
The big thing there, the part that resonated in my mind, was finish. I need to finish more things...
The person that started less 'brilliant', through finishing, can usurp the brilliance of the one that started strong. Intelligence is a gift and should be nurtured, not presumed on.
Yeah yeah "that's the way it was back then"..