 Such a statement is reminiscent of a quotation often attributed to Charles H. Duell, who became commissioner of the U.S. patent office in 1898. According to legend, Duell declared that everything that can be invented has already been invented; and even though this wonderful story is probably apocryphal, it nonetheless illustrates in a humorous way the possible consequences of an impoverished imagination. It would hardly take even 30 years, depending upon the circumstances, for a given life to become dull and insipid. But the idea that a healthy person could exhaust all the possibilities for adventure and meaningful experience in a mere 300 years will strike many as simply preposterous. A mere 300 years is virtually nothing, it is true, when compared to a life without end. So the real issue is whether it is logically possible that an unending life (in which one retains one’s identity as the same person) should be filled with unending joy and ever increasing opportunities for novel and meaningful experiences.