Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
What I have spoken of as being done in a house, can equally well be done in connexion with public buildings, a long journey, the ramparts of a city, or even pictures. Or we may even imagine such places to ourselves. We require, therefore, places, real or imaginary, and images or symbols, which we must, of course, invent for ourselves. By images I mean the words by which we distinguish the things which we have to learn by heart: in fact, as Cicero says, we use
places like wax tablets and symbols in lieu of letters.[*](De Or. II. lxxxvi. 354. )
It will be best to give his words verbatim: [*](De Or. II. lxxxvii. 358. )
We must for this purpose employ a number of remarkable places, clearly envisaged and separated by short intervals: theThis makes me wonder all the more, how Metrodorus [*]( Of Scepsis, the favourite of Mithradates Eupator. See de Or. II. lxxxviii. 360. He used the signs of the Zodiac as aids to the memory, subdividing each into thirty compartments. Quintilian wonders on what principle he can have made such a division, necessarily purely artificial in nature. ) should have found three hundred and sixty different localities in the twelve signs of the Zodiac through which the sun passes. It was doubtless due to the vanity and boastfulness of a man who was inclined to vaunt his memory as being the result of art rather than of natural gifts.v10-12 p.225images which we use must be active, sharply-cut and distinctive, such as may occur to the mind and strike it with rapidity.
I am far from denying that those devices may be useful for certain purposes, as, for example, if we have to reproduce a number of names in the order in which we heard them. For those who use such aids place the things which have to be remembered in localities which they have previously fixed in the memory; they put a table, for instance, in the forecourt, a platform in the hall and so on with the rest, and then, when they retrace their steps, they find the objects where they had placed them.