“I don't know what my IQ is. People who boast about their IQ's are losers” ― Stephen Hawking
Great Minds: Stephen Hawking - The Grand Design Of The Universe
From a scientific view I would say Hawking is indeed at the top, but from a view of overall enlightenment, I'm sure there are many figures that trump him.
Anyway folks, what are your thought on this 'smartest person' question?