275 a-b (tr. H.N. Fowler):
For this invention will produce forgetfulness in the minds of those who learn to use it, because they will not practice their memory. Their trust in writing, produced by external characters which are no part of themselves, will discourage the use of their own memory within them. You have invented an elixir not of memory, but of reminding; and you offer your pupils the appearance of wisdom, not true wisdom, for they will read many things without instruction and will therefore seem to know many things, when they are for the most part ignorant and hard to get along with, since they are not wise, but only appear wise.
Francis Parkman, The Jesuits in North America in the Seventeenth Century
In one particular, the training of these savage politicians was never surpassed. They had no art of writing to record events, or preserve the stipulations of treaties. Memory, therefore, was tasked to the utmost, and developed to an extraordinary degree. They had various devices for aiding it, such as bundles of sticks, and that system of signs, emblems, and rude pictures, which they shared with other tribes. Their famous wampum-belts were so many mnemonic signs, each standing for some act, speech, treaty, or clause of a treaty. These represented the public archives, and were divided among various custodians, each charged with the memory and interpretation of those assigned to him. The meaning of the belts was from time to time expounded in their councils. In conferences with them, nothing more astonished the French, Dutch, and English officials than the precision with which, before replying to their addresses, the Indian orators repeated them point by point.