Quote from : A Biographical Dictionary of Ancient Medieval and Modern Freethinkers Book

{ } magnificent work, which added an incalculable sum to the wealth of America and left him a comparatively poor man, is well known. His own simple account of his discoveries runs to 12 volumes and is incomplete. I was one of the few men whom he admitted to his house in Santa Rosa in the few months before he died and I found him advanced even beyond the vague theism of his earlier years. He agreed to see me, he said, though he was tired and ill, because of his admiration of my work as a rationalist. He had just raised a storm by a public declaration that he did not believe in a future life, and his biographer repeats this.