A man deposits some fluid in a womb, and nothing more; then hidden forces go to work within the woman, forming a child. A human being, sprung from such a substance! The child suckles milk and eats her first foods—again, hidden forces go to work, transforming food and drink into bone and brains, strength and intelligence, movement and life. Astounding! Notice how even great things have small beginnings, and how unseen, imperceptible forces are the most powerful of all.
