To a census-taker, who asked him in 1872 if he was a Catholic, Hugo replied, "No. A Freethinker." Hugo predicted that Christianity would soon disappear, but men would still believe in God.
In my most extreme fluctuations I have never been an Atheist in the sense of denying the existence of a God. I think that generally ... an Agnostic would be the more correct description of my state of mind.