Linus Pauling was an American chemist, author, educator, and peace activist. He was one of the most influential chemists in history and ranks among the most important scientists in any field of the 20th century. He was among the first scientists to work in the fields of quantum chemistry and molecular biology. He won the Nobel Prize in Chemistry in 1954 and the Nobel Peace Prize in 1962. 
In the book A Lifelong Quest for Peace: A Dialogue (pp. 22), which he co-authored with Daisaku Ikeda, he wrote, "I [Pauling] am not, however, militant in my atheism. The great English theoretical physicist Paul Dirac is a militant atheist. I suppose he is interested in arguing about the existence of God. I am not. It was once quipped that there is no God and Dirac is his prophet."