The slow philosophy is not about doing everything in tortoise mode. It's less about the speed and more about investing the right amount of time and attention in the problem so you solve it.

We know that no algorithm can solve global poverty; no pill can cure a chronic illness; no box of chocolates can mend a broken relationship; no educational DVD can transform a child into a baby Einstein; no drone strike can end a terrorist conflict. Sadly, there is no such thing as 'One Tip to a Flat Stomach.'

We live in a culture that's been hijacked by the management consultant ethos. We want everything boiled down to a Power Point slide. We want metrics and 'show me the numbers.' That runs counter to the immensely complex nature of so many social, economic and political problems. You cannot devise an algorithm to fix them.

There are times when fixing things quickly is the only option: when you have to channel MacGyver, reach for the duct tape, and cobble together whatever solution works right now. If someone is choking on a morsel of food, you don't sit back, stroke your chin and take the Aristotelian long view. You quickly administer the Heimlich maneuvre.

The trials on the road to world harmony are no greater than the courage of those who accept the challenge.

Travel, instead of broadening the mind, often merely lengthens the conversation.

When the new becomes commonplace, people become accustomed to it. That's a tribute to our sense of adventure.

I travel abroad constantly on book promotion and research, and the Internet is invaluable to me for accessing U.K. news in places such as America, which most of the time hasn't heard of England.