Some memories, when they shed light on aspects of the past that went almost unnoticed, give us food for thought. It seems incredible that they evoke feelings that were not experienced when the circumstances in question were actually lived through, or at least not given their due value. Now, it is time to be moved by nostalgia. When we delve into these memories, it seems that the set of situations experienced at a certain moment, even if apparently unhappy, even if they leave an unpleasant mark in some way, also hold something else that is truly special. And it is this, after all, that we may not have known how to take advantage of, and that we cannot do so now, because the moment has passed.