Thousands and thousands of times, brain surgeon Gary K. Steinberg, MD, PhD, has done one of medicine’s most difficult jobs. Why? He fell in love. In this video, Steinberg, chair of Stanford Health Care’s Department of Neurosurgery, director of the Stanford Moyamoya Center, and founder and co-director of the Stanford Stroke Center, explains his gradual evolution of study from psychiatry to psychobiology to neurology— and finally to cerebrovascular neurosurgery. He shares some of the journey that took him from the outside of the brain into the depths of what makes us human.