Yes, he did--" Now who will tell me that this talk has any rhyme or reason?
Not a spark of reason.

Yet a real rhyme: or rhythm, much more important.
The song and the urge of the mother's voice plays direct on the affective centers of the child, a wonderful stimulus and tuition.

The words hardly matter.

True, this constant repetition in the end forms a mental association.

At the moment they have no mental significance at all for the baby.