We Are Always Beyond Ourselves
Such as accuse mankind of the folly of gaping after future things, and advise us to make our benefit of those which are present, and to set up our rest upon them, as having no grasp upon that which is to come, even less than that which we have upon what is past, have hit upon the most universal of human errors, if that may be called an error to which nature herself has disposed us, in order to the continuation of her own work, prepossessing us, amongst several others, with this deceiving imagination, as being more jealous of our action than afraid of our knowledge.
We are never present with, but always beyond ourselves: fear, desire, hope, still push us on towards the future, depriving us, in the meantime, of the sense and consideration of that which is to amuse us with the thought of what shall be, even when we shall be no more. The mind anxious about the future is unhappy (Seneca).
Michel de Montaigne, in 'Essays'