Our knowledge of the world is always fragmentary and incomplete and our explanations of how the world works have therefore to be considered as provisional. This means we have to accept that sometimes we will turn out afterwards to have been wrong. But we can use that knowledge to learn and refine our ideas.

Electronic systems change not only what we know, but how we know it.

I think the biggest risk is the situation with the EMU as I have explained. I can see that this has the potential to derail the world economy in the same way the 2008 credit crisis did.

BE CONSISTENT across your communication – what your values are, what you're trying to do – it's super obvious but without a single clear proposition that you communicate consistently at every contact point, you can't expect to grow an audience that believes in you.

Early on, being told no helped me figure out what I wanted my yes's to be. I learned who I wanted to be from people telling me who I could not be.