FOUR KINDS OF PEOPLE

I am reading a book called " Who Says Elephants can't Dance " by Lou Gerstner ( Its about IBM's Magical Turnaround in the 90's ) . Found this interesting piece from there . There are four kinds of people :

THOSE WHO MAKE THINGS HAPPEN
THOSE FOR WHOM THINGS HAPPEN
THOSE WHO WATCH THINGS HAPPEN
THOSE WHO DON'T EVEN KNOW THINGS ARE HAPPENING .