But the more important the early decisions, the more an adviser is likely to show his true colours.

ECONOMIST: Economics Focus: The PC crowd | The

John Bull complains 'Look here, this dark horse you are trying to palm off on me is coming out in his true colours as soon as I begin to rub him down!'

BBC: In pictures: David Lloyd George election posters

He expressed for the first time accurate laws of motion, the origins of colours, the existence and effects of gravity, and the fact that the same physical laws hold true throughout the universe.

ECONOMIST: Isaac Newton