Who was the primary author of Charter 08, a document openly calling for significant democratic reforms as noted in the nonfiction book, Age of Ambition: Chasing Fortune, Truth, and Faith in the New China?

Liu Xiaobo, a prominent Chinese dissident, has been imprisoned repeatedly throughout his life. He was the primary author of Charter 08, a document openly calling for significant democratic reforms. As a result, he was imprisoned for 11 years and barred from accepting the Nobel Peace Prize he received for his work.