In a healthy individual, a broken bone that has healed properly is strongest where it was once broken. You have not lost any life, Henry told himself. You will still get your fair share of years. Yet the quality of his life changed. Once you've been struck by violence, you acquire companions that never leave you entirely: Suspicion, Fear, Anxiety, Despair, Joylessness. The natural smile is taken from you and the natural pleasures you once enjoyed lose their appeal.

Progress is unstoppable. It is a drumbeat to which we must all march. Technology helps and good ideas spread – these are two lows of nature. If you don’t let technology help you, if you resist good ideas, you condemn yourself to dinosaurhood! I am utterly convinced of this.

Life is so beautiful that death has fallen in love with it, a jealous, possessive love that grabs at what it can. But life leaps over oblivion lightly, losing only a thing or two of no importance, and gloom is but the passing shadow of a cloud.

We commonly say in the trade that the most dangerous animal in a zoo is Man.

If there's only one nation in the sky, shouldn't all passports be valid for it?

A zoo is not an ideal place for an animal - of course the best place for a chimp is the wilds of Tanzania - but a good zoo is a decent, acceptable place. Animals are far more flexible than we realize. IF they weren't, they wouldn't have survived. But my opinion about zoos came after research. Initially I had the opinion that most people have, that they are jails.

You can get used to anything - haven't I already said that? Isn't that what all survivors say?