OF THE
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Iman Wilkens idea of why the Celts didn't write things down is one of the flaws of the book. He suggests that this was how the Druids "kept their power". (I already mentioned that he seems to be looking at things through the Judeo-Christian lens.)See also:
But, if we look at what Caesar said was the reason for the ban on writing, we find that it was really quite logical. The Druids were concerned that their pupils should not neglect the training of their memories, i.e. the Frontal Cortex, by relying on written texts.
It is worth noting that, in the nineteenth century, it was observed that the illiterate Yugoslav bards, who were able to recite interminable poems, actually lost their ability to memorize once they had learned to rely on reading and writing.
So, it seems that the Druids were actually concerned more about the accurate transmission of their knowledge than "holding power."
Although the Druids prohibited certain things from being written down, it's clear that they DID write. Celtic writings in Ogamic script have been found on many ancient stones. Caesar tells us that the Celts were using the Greek alphabet when the Romans arrived in Gaul in the first century BC.
Comment: It's certainly curious that, like Julius Caesar, Genghis Khan oversaw great changes which resulted in the betterment of society - if only temporarily - and yet official history portrays them both in a particularly negative light: