So much for Rachel. The inside of Laura was different indeed: something vast, complicated, and nebulous that can hardly be put into language. To take a metaphor from tadpoles, though legs were growing her gills had not yet dropped off. Being nearly four years old, she was certainly a child: and children are human (if one allows the term “human” a wide sense): but she had not altogether ceased to be a baby: and babies of course are not human⁠—they are animals, and have a very ancient and ramified culture, as cats have, and fishes, and even snakes: the same in kind as these, but much more complicated and vivid, since babies are, after all, one of the most developed species of the lower vertebrates.

In short, babies have minds which work in terms and categories of their own which cannot be translated into the terms and categories of the human mind.

It is true they look human⁠—but not so human, to be quite fair, as many monkeys.