We learn to speak our mother tongue at home, naturally and intuitively, at our mother's knee. So every intonation of the spoken language is etched into our psyche.
By contrast, we are taken out of our home by State Law and sent to a special institution, with specially trained staff, to teach us literacy, to teach us how to read and write. We are sent to school.
And we are sent to a special institution outside our family because literacy is unnatural, counter-intuitive, but is the very basis of the modern world.
Interestingly, the spoken word is intoned while the printed word is visual without intonation.
So the spoken language we all learn involves all our senses, it involves the expression of our whole body, while the printed language is visual, does not involve our whole body, and requires we dissociate our body from the printed word.
So the printed word enables us to dissociate, to disengage, and to learn a new way of thinking called counter-intuitive.
And counter-intuitive thinking gave rise to science, modern economics, liberal democracy, and modern medicine. So counter-intuitive thinking underlies the modern world.
And while we live in the modern world we hanker back to the intonation of our mother's voice.