Wise Man : Part 1 'An Intro to the Real World'

A wise man told me one day, "Be nice to people."

Me : Why?
WM : 'Cause it's good to be nice.
Me : Why?
WM : 'Cause people will like you.
Me : Why?
WM : 'Cause when you're nice, people will not hate you. Or stab you at the back. Geddit?
Me : So, be nice uh? Good one.
WM : Treat people nicely, and be humble. So people will respect you.
Me : And that's important, yes?
WM : Exactly.
Me : Bet you're so nice to people.
WM : Who? Me? I dont give a s*** bout people.

Huh?