But perhaps Desplein's genius was answerable for his beliefs, and for that reason mortal. To him the terrestrial atmosphere was a generative envelope; he saw the earth as an egg within its shell; and not being able to determine whether the egg or the hen first was, he would not recognize either the cock or the egg. He believed neither in the antecedent animal nor the surviving spirit of man. Desplein had no doubts; he was positive. His bold and unqualified atheism was like that of many scientific men, the best men in the world, but invincible atheists—atheists such as religious people declare to be impossible. This opinion could scarcely exist otherwise in a man who was accustomed from his youth to dissect the creature above all others—before, during, and after life; to hunt through all his organs without ever finding the individual soul, which is indispensable to religious theory. When he detected a cerebral centre, a nervous centre, and a centre for aerating the blood—the first two so perfectly complementary that in the latter years of his life he came to a conviction that the sense of hearing is not absolutely necessary for hearing, nor the sense of sight for seeing, and that the solar plexus could supply their place without any possibility of doubt—Desplein, thus finding two souls in man, confirmed his atheism by this fact, though it is no evidence against God. This man died, it is said, in final impenitence, as do, unfortunately, many noble geniuses, whom God may forgive.