Victor Hugo,
Les Misérables — Volume 5, Book First…
“ Moreover, Cosette could not remember what Marius had said to her on the subject of this absence which was to last only one day, and what explanation of it he had given her. Every one has noticed with what nimbleness a coin which one has dropped on the ground rolls away and hides, and with what art it renders itself undiscoverable. There are thoughts which play us the same trick; they nestle away in a corner of our brain; that is the end of them; they are lost; it is impossible to lay the memory on them. Cosette was somewhat vexed at the useless little effort made by her memory. ”
