Ray Bradbury named the character Clarisse because Clarisse means clarity or clear. In the book, she is often referred to as a bright light or a crystal. This is because the whole purpose of her...
He's a hero because he sees past a corrupt society. We know that he feels the need to "fix" this deteriorating world, but he can't do it alone. The real heroes are the nomads in the end of the book....
Ray Douglas Bradbury is the author's name [the author has stated "Ray" is his birth name and publications that included another spelling as "Raymond" were incorrect.]