Book 11
1.17
This achievement of Simonides appears to have given rise to the observation that it is an assistance to the memory if localities are sharply impressed upon the mind, a view the truth of which everyone may realise by practical experiment. For when we return to a place after considerable absence, we not merely recognise the place itself, but remember things that we did there, and recall the persons whom we met and even the unuttered thoughts which passed through our minds when we were there before.
1.18
Thus, as in most cases, art originates in experiment. Some place is chosen of the largest possible extent and characterised by the utmost possible variety, such as a spacious house divided into a number of rooms. Everything of note therein is carefully committed to the memory, in order that the thought may be enabled to run through all the details without let or hindrance. And undoubtedly the first task is to secure that there shall be no delay in finding any single detail, since an idea which is to lead by association to some other idea requires to be fixed in the mind with more than ordinary certitude.
