At first he sees her face as a blur, and though he knows her, knows her by a direct glow of communication, as if her face were a warm glowing life-lamp which rejoiced him.

But gradually, as the circuit of touch, taste, and smell become powerfully established; gradually, as the individual develops in the child, and so retreats towards isolation; gradually, as the child stands more immune from the mother, the circuit of correspondence extends, and the eyes now communicate across space, the ears begin to discriminate sounds.

Last of all develops discriminate hearing.
Now gradually the picture of the mother is transferred to the child's mind, and the sound of the first baby-words is imprinted.

And as the child learns to discriminate visually, objectively, between the mother and the nurse, he learns to choose, and becomes individually free.

And still, the dynamic correspondence is not finished.