The world has lost an incredible thinker and doer. I have lost an amazing friend. A void exists where before it was filled with David's optimism, humour and joy.
Nouriel Roubini
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How to Tax a Millionaire
French President François Hollande on Friday confronted the country's bankers, business leaders and wealth class with his bold announcement of a 75% "supertax" on the super rich to help cut the deficit.
