For the first three years of his first-born son William’s life, Darwin observed him with the practiced eye of a naturalist, recording developments as diverse as his ability to follow a candle with his eyes to the first manifestations of conscience.
Durante los tres primeros años de la vida de su primogénito, William, Darwin lo observó con el ojo experto de un naturalista y registró acontecimientos tan variados como su capacidad para seguir una vela con su mirada y su primera manifestación de consciencia.