" As director Brad Bird sees it, every creative organization—be it an animation studio or a record label—is an ecosystem. “You need all the seasons,” he says. “You need storms. It’s like an ecology. To view lack of conflict as optimum is like saying a sunny day is optimum. A sunny day is when the sun wins out over the rain. There’s no conflict. You have a clear winner. But if every day is sunny and it doesn’t rain, things don’t grow. "

― Ed Catmull , Creativity, Inc.: Overcoming the Unseen Forces That Stand in the Way of True Inspiration