What is the author's tone in the memoir, Mortality?

Although Christopher Hitchens was writing about his impending death in his book, "Morality," there was an absence of bitterness and anger. He expressed his hopes that he would survive and took every treatment that was offered to him but he never showed signs of bitterness or "why me?"

Christopher also used humor in this work which was part of his style. He mentions the horror of seeing oneself on YouTube videos. He wonders what he'll do if he lives and those who prayed for him will think they did it. He fears that he will become delirious and ask for a priest. He wonders if he'll last until he has to renew his license. He hates to see the phrase, "expiration date."

Even though "Mortality" is a tale of dying and death, it is done in a manner that is interesting and informative and even at times, humorous.