Studying the writings of Karl Marx he became a convert to an extreme revolutionary, socialistic and atheistic creed; but though he entered into correspondence with Marx, with the object of starting a revolutionary movement, he does not appear to have taken any overt part in the events of 1848-1849.
Within itself dogmatic atheism, and is probably the only coherent or reasoned type of atheistic opinion.
It was in this form that he criticized the " atheistic mesmerism " to which his sister Harriet had committed herself, and she never forgave his criticism.
The " atheistic " Republic did not for one moment think of putting on sackcloth, or even of giving the Church a single proof of esteem and sympathy.
Those ineradicable forces of the natural man assumed, if we may trust the depositions of ecclesiastics well acquainted with his life, a form of brutal atheistic cynicism.