He also wrote frank accounts of family tragedies, physical illnesses and moments of self-doubt, as he laboured towards publication of the book that would change the way we see the world.

• 他还坦率地写到家庭帐户，身体疾病和时刻自我怀疑，因为他的辛勤努力，该书的出版将改变我们怎么去看这个世界。