The mechanism—whatever it
is—is natural, not supernatural.
Darwin held off on publishing his
theory for 20 years, until forced to by fellow naturalist Alfred Russel
Wallace, who had independently come up with the same idea. One of the reasons
for Darwin's delay was he knew what a shock his theory would represent to
Christians, including his beloved wife Emma, who believed that God had created
all living things, whole and independent of all others. Darwin didn't
hold this view. His friend, the biologist T. H. Huxley, agreed. "As a
natural process of the same character as the development of a tree from its
seed, or of a fowl from its egg," Huxley wrote, "evolution excludes
creation and all other kinds of supernatural intervention." Of course,
many people around the world still believe in a divine instrument of creation.