10. Paul Kurtz
Paul Kurtz is the octogenarian founder of numerous humanist and scientific
organizations, including the Council for Secular Humanism, the Committee for the
Scientific Investigation of Claims of the Paranormal, Free Inquiry magazine, and
the Center for Inquiry International. Kurtz, who still speaks and writes widely
on humanist topics, argues that secular humanism is different from
atheism because of its emphasis on positive ethical values. His goal is to
promote "living the good life without religion," he told Beliefnet in 2002.
Kurtz also founded Prometheus Books, an independent publisher of books on
humanism, science, philosophy, and through its newest imprint, science fiction.