Nominate a hero for the "Atheists' Sistine Chapel Ceiling"

THE CEILING 50:This blog has been set up to publish and ask for suggestions for a list of 50 individuals from history who have had a significant impact on civilization. The 50 characters, when the list is finalized, will be elevated - literally - on to the ceiling of a large room of an Italian villa, Casa Bella Fonte in a town called Montalto della Marche. The project is to design and paint an "Atheists Sistine Chapel Ceiling".