CHAPTER III

WHEN DOES HUMAN LIFE BEGIN?

Ancient and modern opinions. The fetus is animated at the moment of conception. The single cell as the primal life-organ. Cell growth and division. Germ cells. The development of the embryo. Fetal viability. Theories of development. The Aristotelian and Thomistic opinions. The formal principle. A soul exists. The primordial cell is a sufficient organ for the soul. Metabolism in the cell. Cell motion. Animal heat and energy. Life in separated tissues. The soul in monsters 33-82