Assume that a man named Mr. Smith, either very charitable or very daring, has already donated his kidney to someone who needed it. He is a generous man who has made many financial contributions to science and public health, and he simply felt he needed to do more as he has done, in his words, "nothing else with his life." Mr. Smith's decision caused discord among his family, who didn't want him to give away his kidney to a stranger. Now, he hears that someone else needs a kidney, someone of the same rare blood type as him, and he offers his second kidney, which would inevitably kill him (You can't live without a kidney!)
He adamantly says that he wants to do this. Without his kidney, the other person, a highly respected scientist, will die.
He believes that the his life is not worth more than anyone else's, and if the scientist chooses to live and he's ready to die, that scientist might cure Cancer some day.
Mr. Smith is perfectly healthy and has no known health conditions.
Does this Mr. Smith have the right to give up his life to save someone else's.