" humans the prefrontal cortex takes up a larger ratio of the brain’s top layer, the neocortex, than in any other species, and has been the site of the major evolutionary changes that make us human. This neural zone, as we will see, holds the seeds of awakening to enduring well-being, but it is also entwined with emotional suffering. We can envision wonderful possibilities, and we also can be disturbed by worrisome "

― Daniel Goleman , Altered Traits: Science Reveals How Meditation Changes Your Mind, Brain, and Body