Stephen Lewis

All I know is that every time I go to Africa, I am shaken to my core.

It gives one hope, this great strength of Africa.

But I don't want to leave until I see the breakthrough.

Why do men fight who were born to be brothers?

Fear is a far more dominant force in human behaviour than euphoria - I would never have expected that or given it a moment's thought before, but it shows up in the data in so many ways.

Technology is characterized by constant change, rapid innovation, creative destruction, and revolutionary products.