Progressive Thought by Jim Yong Kim

It's not a question of whether you are for or against the private sector in development.  It's simply a question of how high your aspirations are for lifting people out of extreme poverty.

If you limit yourself to working just with those who have the same perspective and ambitions as you do, you'll constantly be bumping into glass walls.

Instead, find the common ground on which you both stand and start there, together.  Walk a mile with your enemy, you'll be surprised how much you ultimately want the same thing.