 If we could find a way to extend our lives indefinitely, yet avoid the ravages of senescence, and remain healthy and mentally competent, couldn’t we avoid becoming jaded with life by gradually varying our interests over time, adding to and perhaps replacing some of our categorical desires, again and again? Several theorists including Nagel (1986, p. 224, n. 3), Glover (1977, p. 57), and Fischer (1994), have argued that the lives of superseniors need not become dull and tedious. Williams’s view is that it is not possible to make eternal life desirable (which claim is not identical to the claim that eternal life would inevitably be bad for us). Varying my categorical desires will not work, because, to be desirable, the endless life I design for myself must meet two conditions: (1) “it should clearly be me who lives forever,” and (2) “the state in which I survive should be one that, to me looking forward, will be adequately related, in the life it presents, to those aims I now have in wanting to survive at all.” (1973, p. 83) If I replace my categorical desires, I fall afoul of at least one of these conditions. Life under the future desires is detached from life under my current categorical desires. Moreover, the desires I give myself in the future will be elements of a character that is very different from my current character; replacing my current character with an entirely different one later in life makes it far less clear, Williams appears to think, that the individual living that later life is me. “The degree of identification needed with the later life … is absolutely minimal.” (1973, p. 85)