“What is this thing of intangible substance that wreaks consequential havoc on our lives? What is this sensitive thread that runs through heart and mind, and when given the slightest tremor grasps hold of all sanity, dragging the afflicted down to insufferable depths or flinging him weightless to euphoric heights? What is this magic we would deem imagination, fantasy, or pretend if not for the evidence of power manifest by human consequences? Effortlessly controlling us, it affects the infected in an instant. It takes but one word, one thought, one act to become immersed. To stop it is hopeless. To stifle it, demanding. To think to master it is both improbable and pretentious. What is this invisible hand that blinds our eyes and reigns hearts with a string? It is nature's drug and poison we call emotion.”