...these, through the negligence of memory, will produce oblivion in the soul of the learner, because, trusting to the external and foreign marks of writing,...internal powers of recollection. So that you have invented an instrument not for the memory, but for admonition ; and you will thus deliver to your pupils...

...notion may be traced back via Boehme to Plato's distrust of the written word: For these [letters], through the negligence of recollection, will produce...will likewise deliver to your disciples an opinion ot wisdom, and not truth. For, in consequence of having many readers without the instruction of a master,...