"Those who accuse men of always gaping after future things, and teach us to lay hold of present goods and settle ourselves in them, since we have no grip on what is to come (indeed a good deal less than we have on what is past), put their finger on the commonest of human errors--it they dare to call an error something to which Nature herself leads us in serving the continuation of her work, and which, more zealous for our action than for our knowledge, she imprints in us like many other false notions. We are never at home, we are always beyond. Fear, desire, hope, project us toward the future and steal from us the feeling and consideration of what is, to busy us with what will be, even when we shall no longer be. A soul anxious about the future is the most vulnerable [Seneca]."

--Montaigne, Essays