Conversation so far:
What is the reactions to Christopher Hitchens's death about?
Former British prime minister Tony Blair said, Christopher Hitchens was a complete one-off, an amazing mixture of writer, journalist, polemicist, a unique character.
Who was the one that said that Christopher Hitchens was a complete one-off?
Tony Blair
What was someone else's reaction to Christopher Hitchens's death besides Tony Blair?
American theoretical physicist and cosmologist Lawrence Krauss said, Christopher was a beacon of knowledge and light in a world that constantly threatens to extinguish both.

Question: How did he pass away?
Self-contained rewrite: How did Christopher Hitchens pass away?