Lyric discussion by analytical1canthelpit 

WHEN HE SAYS, 'i can see three corners from this corner' HE IS SAYING THAT HE IS ABLE TO SEE ALL PERSPECTIVES, NOT JUST HIS OWN. THEN, 'two is the perfect number, but one well everybody's happy, everybody's free.' IN OTHER WORDS, IT'S ALWAYS EASIER TO SEE ONLY ONE CORNER (one perspective, that one being your OWN), BUT IT'S ALSO THE IGNORANT WAY TO BE. THIS SONG IS ABOUT THE ABILITY, OR INABILITY, OF PEOPLE TO BE OPEN-MINDED AND NOT JUDGE ONE ANOTHER FOR BEING DIFFERENT, OR SEEING THINGS FROM A DIFFERENT PERSPECTIVE. IT'S ABOUT BEING ABLE TO SEE ALL THINGS FROM MORE THAN ONE 'CORNER' OR PERSPECTIVE.