My child, knowledge is a treasury and your heart is its strongbox. As you study all of knowledge, you store up for yourselves good treasures, immortal treasures, incorruptible treasures, which never decay nor lose the beauty of their brightness. In the treasure-house of wisdom are various sorts of wealth, and many filing-places in the store-house of your heart. … The orderly arrangement is clarity of knowledge. Dispose and separate each single thing into its own place. … Confusion is the mother of ignorance and forgetfulness, but orderly arrangement illuminates the intelligence and secures memory.
~Hugh of St. Victor, “The Three Best Memory-Aids for Learning History”