This book is dedicated to:
My mentors Dr. Martin A. Samuels, Dr. Allan H. Ropper, and Dr. Steven K. Feske, who through their extraordinary mentorship and teaching trained me not only in the science of Neurology, but in the art of Medicine.
The students and residents at Harvard Medical School and the Partners Neurology residency program (Boston); the residents and faculty at Hôpital Universitaire de Mirebalais, Hôpital St. Nicolas de St. Marc, and Hôpital St. Boniface (Haiti); and the students and residents at Queen Elizabeth Central Hospital and Kamuzu Central Hospital (Malawi), who through their brilliant questions and insatiable desire to learn taught me how to teach neurology.
The patients with and through whom I learned the practice of neurology and medicine, and whose courage in the face of suffering inspires us to learn more about their diseases, teach what we learn to others, and serve them and their families to the best of our abilities.
My wife Nina, whose boundless support, encouragement, and companionship have been both a sustaining force and a source of great joy.
My father (in memoriam), who instilled in me a passion for science, medicine, and service.