Phaedrus

Socrates is telling Phaedrus a story he had from the ancients who knew about truth. Thoth, the "father of letters" and the "god of time" once came to the Egyptian king Thutmose of Thebes. He taught this ruler about various arts he had invented and especially about the art of writing that he had thought up. In praise of his invention, he said to the king "This knowledge, O King, will make the Egyptians more wise and better able to remember things; for it has been invented as an aid to the memory as well for wisdom." But the king was not impressed. On the contrary, he foresaw as the result of the art of writing that:

This will bring forgetfulness into men's souls...through the neglect of remembering, in that by trusting in writing they will draw remembrance from without...and not from within, from their own selves. You have not, therefore, invented a means of remembering but of recording, and you pass on to your pupils only the appearance of wisdom, not the thing itself. For they are people who hear much without learning anything and will therefore think themselves very knowledegable, since in general they are ignorant, and they are people who are difficult to deal with, in that they are apparently wise but not truly so.

-Phaedrus by Plato, taken from Truth and Tolerance: Christian Belief and World Religion