" are two kinds of people: eaters and bakers. Eaters think the world is a zero-sum game: what you eat, someone else cannot eat, so they eat as much as they can. Bakers think that the world is not a zero-sum game—they can just bake more and bigger pies. Everyone can eat more. People trust bakers and not eaters. "

― Guy Kawasaki , What the Plus! Google+ for the Rest of Us