Darwin changed with the times at a period in history where industrialism was beginning to revolutionize society, and science had completely changed its perspective. Along with Darwin's explorations, many discoveries were taking place, placing God in a second to none place in comparison to the early Victorian period and late Hanoverian period where God was the center, cause, and effect of all that lived.
Comparatively, Darwin began his life as a true God-centered Christian. As society, the sciences, literature, and the economy of Victorian England began to change, a shift of ideals began to permeate the once eccentrically religious land. With it, Darwin refrained from taking sides and went from Christian to Agnostic, in the hopes of exploring in depth the scientific base of faith, and without denying the existence of something else out there.