In my opinion, I would say the greatest and my favorite scientist was Galileo Galilei. The guy was one of the first to pioneer proven science and write down his findings. Galileo stood-up against the Church in which at that time, could be fatal He wrote books, which offended the Church but he wrote another book just to offend the church with a nice clandestined meaning. His findings later helped other Scientists like Newton move on and use them as a stepping stone. The year Galileo died under house arrest was a death of a great Scientists, yet in that same year another scientist was born: Sir Isaac Newton. So, who do you think is the best Scientist (contributed most to science) of all time? There is no "other" choice, so please ad who you think is the best if your Scientist is not on the list in a post, and tell why.