The human being might ask the animal: “Why do you just look at me like that instead of telling me about your happiness?” The animal wanted to answer, “Because I always immediately forget what I wanted to say” - but it had already forgotten this answer and hence said nothing, so that the human being was left to wonder.
But he also wondered about himself and how he was unable to learn to forget and always clung to what was past; no matter how far or how fast he runs, that chain runs with him. It is cause for wonder: the moment, here in a flash, gone in a flash, before it nothing, after it nothing, does, after all, return as a ghost once more and disturb the peace of a later moment. Over and over a leaf is loosened from the scroll of time, falls out, flutters away - and suddenly flutters back into the human being’s lap. Then the human being says “I remember,” and he envies the animal that immediately forgets and that sees how every moment actually dies, sinks back into fog and night, and is extinguished forever.
~ Friedrich Nietzsche, On the Utility and Liability of History For Life (via dreamofyears)