Voltaire was one of the great thinkers, brilliant and flawed. He is often quoted, usually wrongly. That one about "I disagree with your opinion but I will fight to the death for your right to express it" - he never said that, or not quite. He did however offer that Ice Cream is so good that it should be illegal! So learn the truth, see the things he actually said, in English and French where possible, and find out about his flaws. He was rabidly anti-Semitic and a philanderer, for instance and had to keep moving to stay ahead of the Royal Police as he kept insulting the monarch!