" Over time, our beliefs begin to blend into our identity. Your belief in CrossFit makes you a CrossFitter, your belief in climate change makes you an environmentalist, and your belief in primal eating makes you paleo. When your beliefs and your identity are one and the same, changing your mind means changing your identity—which is why disagreements often turn into existential death matches. "

― Ozan Varol , Think Like a Rocket Scientist: Simple Strategies You Can Use to Make Giant Leaps in Work and Life